Places

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The present parish of Kimpton lies in the south-west of North Hertfordshire District, the main settlement area today occupying a valley running west to east. A now lost river, the River Kyme, once flowed through the valley but now runs in a culvert beneath the High Street. Before that, the High Street cannot have existed, and it periodically suffers floods after heavy rain, most notably in 1795 and 2001. We do not know when the river was diverted underground, but it must have been before about 1600, when the earliest maps fail to mark it.

Where was the village when the river still flowed along the valley bottom, to join the Mimram on the edge of the parish? Maps provide an obvious clue: the parish church of Ss Peter & Paul lies to the northeast of the village centre, on a south-facing slope. Lidar shows that it sits inside an artificial-looking embanked rectangular enclosure very similar to a group at Pirton shown in recent years to be early medieval in origin. At Pirton, they have been dated to the end of the early medieval period (8th or 9th centuries) and probably belonged to people of high status, perhaps the type referred to as þegns (thegns or thanes) in documents of the period. In this case, the church may have originated as a proprietary church, belonging to a local landowner.

Proprietary churches caused much discussion in the eighth century over how bishops might manage the priests there, something the owners often resisted. With ecclesiastical reforms in the tenth century leading to the development of the familiar parish system between then and the twelfth century, proprietary churches were gradually brought into the system as the main parish church. This is possibly what happened at Kimpton. Although the present building dates mostly from the thirteenth and fourteenth centuries, the writer observed work on the church in 1989 that revealed a foundation trench on a different alignment running beneath the wall of the Victorian vestry and earlier than the original north wall of the church. This is a good sign that there was an earlier building – not necessarily the precursor to the church – here in the past.

Another clue is that the road to Welwyn, which continues the line of the High Street to the east, runs slightly uphill to the south of the River Kyme as it emerges from the ground just before its confluence with the Mimram. Perhaps the original route kept to the slightly higher ground before migrating into the valley bottom after the river was covered over.

A more radical solution might be to look for evidence of earlier routes through the parish. The present road layout existed by 1766, when Dury & Andrews published their map of Hertfordshire, although there were then very few buildings on the south side of the High Street. Apart from the High Street, many routes run north to south across its line, including the road to Whitwell and ultimately Hitchin, which runs alongside the eastern edge of the church enclosure. At least one of these lines, running north from Blakemore End, has been seen as Roman.

R H Reid, a member of the group of amateur Roman road hunters who called themselves the Viatores, proposed in 1964 that a road ran from the Roman city of U̯erolami̯um to Ickleford and on to Bedford and, eventually Irchester in Northamptonshire. He excavated a section across the proposed line at Heron’s Farm, south of Gustardwood, in August 1959 and showed that this was a properly engineered Roman road. It had a base of pebbly clay 0.10 to 0.23 m thick, topped with a tightly packed layer of gravel, flint pebbles and angular flint between 0.13 and 0.25 m thick. There was a camber (the curvature of the surface) of 0.36 m across the width of 5.5 m, and a supposed shallow ditch to the west, although the published section does not inspire much confidence, showing it to be about 1.1 m wide and only 0.2 m deep. Nevertheless, this section of the road is real enough.

Lidar data confirms the line of the road north through Blackmore End to south of Kimpton Hall, where landscaping (perhaps medieval gardens) has obliterated it. It then follows the northern part of Hall Lane, where it has worn into a hollow way as it descends into the valley. The line is lost north of the High Street and Kimpton Park, established in 1346, has hidden any traces that might have shown on Lidar. The route that Reid proposed went north towards Whitwell and through Gosmore to Hitchin. Not one stretch of this line can be shown to be Roman, and parts belong to an eighteenth-century road past Stagenhoe.

R H Reid proposed a second road through Kimpton, running from Coleman Green to Baldock. He took it on a strangely contorted route along the eastern parish boundary, past Abbotshay in Codicote, and east of Rye-end Farm. There is nothing on the supposed line to show a Roman origin until it reaches Rush Green, where it falls into line with the previously known course. Instead, Lidar data shows a clearly engineered road on the western edge of Prior’s Wood in the southeast corner of the parish, which aligns almost precisely with the section north-northeast from Rush Green. Beyond the northern edge of the wood, it turns to a more northeasterly alignment, probably to negotiate the valleys of the River Kyme and River Mimram.

Reid also suggested third route, which he called a ‘lateral way’, between Friar’s Wash and Ayotbury, largely following the southern parish boundary. There is nothing to show that this is Roman, and many of the claimed sections of agger (the raised foundations of engineered roads) are nothing more than denuded field banks. We can discount this as an ancient road.

But what of the road through Blackmore End? Where did it go after crossing the River Kyme in the valley bottom? Aerial photographs show a complex of buried ditches west of Park Wood, including some double ditches that look like tracks or roads. They are evidently the remains of a village or hamlet and their form suggests a Roman date. Projecting the main double-ditched feature to the southeast reaches Kimpton High Street exactly where the road through Blackmore End reaches it. It is reasonable to conclude that this was where the road headed, not in the Hitchin direction but aiming towards Breachwood Green. We must leave tracing it further in this direction for another occasion, but it would pass very close to the likely site of the sixth-century burial mentioned a few weeks ago.

There are no reported finds from the area of the cropmarks, either made by detectorists or casual walkers. The cropmarks indicating the settlement were best visible on Google Earth™ in 2012 but can be seen on several others by enhancing the contrast, which shows that the marks are not random difference in crop growth but instead reflect buried features. They appear to show a settlement consisting of enclosures separated by trackways, although there is not enough detail to give us a complete plan.

One final point to note is the name of the River Kyme. The river-name expert Eilert Ekwall was in no doubt that Kyme is a back-formation from the village name (in other words, it was never an independent river-name). Although Cyma is a genuine Old English personal name, there is river-name Kyme in Lincolnshire, which Ekwall derived from a hypothesised Old English *cymbe, ‘a hollow’. If the river-name came first – which is what we usually find, as in nearby Luton, named from the River Lea – could Kimpton be the tūn (‘enclosed farm’) on or close to the River Kyme? The next possibility is that because many river-names belong to an older stratum of place naming than Old English village names, *cymbe may not be Old English but from the Celtic dialect Brittonic. An earlier *Cumbi̯a (‘valley-river’) would develop regularly into *cymbe, and this possibility seems the most likely etymology.

This analysis of the landscape of Kimpton points towards an understanding of how settlement shifted over time. The earliest village, in Roman times, lay to the west of Park Farm, next to a road that came up from the south before crossing the River Kyme and turning to a more northwesterly alignment. This was perhaps the first village community in the valley.

Later, perhaps in the eighth or ninth centuries, a local lord established a chapel in his defended enclosure that later became the parish church. As the River Kyme vanished underground, perhaps partly through human agency and perhaps partly through a lowering of the water table, so a new route along the valley bottom became the focus for the settlement by the later Middle Ages, developing into the focus of the current village.

Written by Keith Fitzpatrick-Matthews

Sometimes, maps and placenames hint at past activities that are not immediately visible. Often the places are on private land but, as we’ve seen in previous Archaeology Tuesdays, aerial (or satellite) photography can reveal details. But how do we cope with woodland, such as at Tingley Wood in Pirton, just north of the B655 Hexton Road to the west of Hitchin? The name Tingley, while obscure, is first recorded in the thirteenth century as Tinele, the first element of which may derive from Old English tȳned, ‘enclosed’.

What might have been enclosed? Was it the wood (although the second element leah implies a clearing within woodland) of something already there when the wood got its name? Here, we can use a technique known as Lidar to help us see through the tree canopy to what lies on the ground surface below. Lidar has been around for more than 60 years, yet its applications in archaeology only go back twenty-five years or so. Its great advantage is that it enables us to see subtle earthworks and, remarkably, those under woodland. When first developed for satellite tracking in 1961, during the space race, it was known as Colidar (Coherent Light Detecting And Radar).

Like any such new technology, the military soon spotted that it might be useful, and the US army began using it for long-distance targeting from 1963. Around the same time, the name Lidar was first used. In 1971, astronauts in the Apollo 15 mission used it to map the moon’s surface, at it provides a very accurate altimeter (height measuring system). Altimetry is the aspect of Lidar that archaeologists find so useful.

Lidar works by sending a narrow laser beam (which can be in ultraviolet, visible or near infrared light) in pulses towards a target, measuring the time it takes to reflect. It gives a very precise measurement of the distance between the laser source and the thing being measured. Micropulse Lidar uses low energy lasers that cannot cause damage to eyesight, while high energy systems used in atmospheric studies point away from the ground into the sky. Surveys can be done from an aircraft or can be ground based; in the latter type, the scanners can be stationary or attached to moving vehicles.

From an aircraft, Lidar can give a spatial resolution – the distance between individual measurement points – of less than 30 cm. Global Position Systems record the precise location of each pulse, including the altitude of the aircraft (which is not available to sufficient resolution in everyday GPS devices). The data is returned in the form of a ‘point cloud’, a set of measurements located in three dimensions: latitude, longitude and elevation.

As raw data, point clouds are not easily ‘read’, so they have to be processed. They are excellent for producing contour maps more accurately than any human surveyor could achieve, but their most familiar applications are to make Digital Surface Models (which include buildings and trees) and Digital Terrain Models (which ‘remove’ buildings and trees).

There are numerous uses for the data produced by Lidar surveys, from agriculture (such as monitoring crop growth) through conservation (such as measuring the biomass of an area), to geology (such as identifying uplift after earthquakes) and atmospheric studies (including measuring wind speed and cloud structure). More controversially, hand-held ‘speed guns’ used by traffic control are based on Lidar, while self-driving vehicles rely on it to avoid obstacles.

Archaeological uses have become one of the most widely-publicised applications of the technique. There have been numerous press stories about the rediscovery of ‘lost’ cities and even entire civilisations beneath the jungle canopies of central America and the Amazon basin. In England and Wales, the Environment Agency has been the main force behind Lidar surveys, although other organisations (such as the Chilterns Conservation Board) also commission them.

During 2022, the Environment Agency made all its data, covering most of England and parts of Wales, available free of charge. All of North Hertfordshire can now be viewed through portals such as lidarfinder.com or the National Library of Scotland’s very useful georeferenced historic maps website (which also covers Scotland and includes a Lidar Digital Terrain Model at 50 cm resolution as one of the background layers).

Tingley Wood, in the southwestern corner of Pirton parish, just to the west of High Down, appears on maps as a simple block of woodland. Large scale maps show a track running through it from east to west, aligned roughly on High Down. Three other tracks cross it, two more-or-less straight, the third curving. Another track leads through a lobe in the southwest of the wood, while a sixth runs from the axial east-west track to the south, where it joins a track that follows the southern boundary.

The maps do not begin to hint at what the Lidar shows. The main east-west track is clear enough, including an extension at the western end, where the mapped track diverts to the south. The track south of the wood also shows, as do others outside the woodland. More significant are a series of banks and ditches around, inside and outside the wood. On the western edge of the photograph is a bank without associated ditch: this marks the line of the county boundary. The origins of Hertfordshire probably lie in the wars between King Eadweard the Elder (AD 899-924), who established fortified towns at Hertford in 912 and Bedford in 914 (and probably also Hitchin and Ashwell, about 913). The shires provided men to staff these burhs, as they were known. The boundary between Hertfordshire and Bedfordshire cut through the earlier folk territory of the Hicce, who gave their name to Hitchin. Because these new shires were artificial creations whose boundaries did not follow those that were long established, banks often mark their course, as here. The bank between Pirton and Pegsdon probably dated from the 910s.

The next thing to notice in the Lidar is a boundary bank for Tingley Wood itself. It encompasses the whole wood apart from a stretch in the south, where it is obliterated by very straight ridge-and-furrow probably created by steam ploughing in the nineteenth century, and at the north-eastern corner, where it also seems to have been ploughed away in recent centuries. A ditch follows outside the bank around the northern side of the wood, but to the southwest, the ditch is inside the bank. To the southeast, the ditch has a bank both inside and outside the wood.

The differences in the relationship between the bank and ditch hint at a complex history. Although it was usual to enclose medieval woodland, the nature of the enclosure depended on its purpose. In woodland used as part of a deer park, the ditch is always inside the bank as it makes it more difficult for the animals to jump across the boundary. For woods that were coppiced to provide timber, the ditch would be outside, as it was intended to keep animals out. We seem to have both systems here, in different parts of Tingley Wood.

Next, we seem to have subdivisions inside the woodland, marked by three banks, two with ditches, running north to south. Those with ditches both have the ditches to the west. The westernmost, which does not have a ditch, lines us with the inner bank of the southwestern lobe of the wood. Does it perhaps mark the original western edge of Tingley Wood? At the eastern end, there is a ditch with only slight traces of an internal bank running from about the middle of the southern edge up to the northeastern corner. Is this perhaps the original eastern edge of the wood? The current eastern part of Tingley Wood disrupts a pattern of ridge-and-furrow cultivation, suggesting that it has expanded over formerly arable land.

These details perhaps show the growth of the wood. If this suggestion is correct, then it was originally about 70% of its current size (11.4 ha as opposed to its current 16.0 ha). The two other north to south internal banks and ditches then divide the original woodland into three zones of unequal area. These separate parts of the wood hint at its original purpose: one of the areas would be coppices, while the other two continued to grow and provide pannage (foraging) for pigs. Perhaps the wood expanded as the demand for timber increased in the later Middle Ages, both for building work and as fuel.

There are also hollows visible both inside and outside the woodland. Most of these are irregular and surrounded by spoil. The area still had several chalk and gravel pits marked on the early Ordnance Survey maps, and this suggests an origin for those in Tingley Wood. At least one of them has partly destroyed the boundary bank and ditch, showing that this activity took place once the wood was no longer being used as a source of timber. However, one hollow to the southwest of the centre is very rectangular and may have been a saw pit, used for cutting timber when the woodland was still in use.

The story does not even end there. As well as the banks and ditches associated with boundaries and the quarry pits, there are other embanked and ditched areas that bear no relation to the woodland. All three lie south of the centre of the wood and all are disrupted by the woodland banks. The southwestern of the tree is very rectangular and lies between the proposed saw pit and the denuded original southern bank of the wood. Could this have been a penned off area used for storing wood processed in the storage pit while it seasoned?

The two other groups of ditches, only one of which is associated with banks, are more enigmatic. One overlies the other (that with banks seems to overlie the purely ditched part enclosure) and both seem to be earlier than any of the woodland management banks and ditches. What they are is unclear. The very straight edges of the ditched trapezoidal part enclosure look to be Romano-British rather than prehistoric or early medieval. Its western ditch appears to continue into the southern extension of the wood as a bank, perhaps showing that its bank within the early phase of Tingley Wood was deliberately levelled.

The bank and ditch of the northern and western edges of a perhaps polygonal (certainly not curved) enclosure overlie the southern end of the possibly Romano-British ditched enclosure. The relationship with the subdivision of the woodland seems to make this enclosure earlier, as it is cut by it and its southern and eastern edges are not visible beyond it, suggesting that they have been obliterated by the woodland. The most reasonable explanation sould be that it is intermediate in date between the underlying putatively Romano-British enclosure and earlier than the woodland. Less easy to characterise, some have identified similar enclosures as early medieval sheepcotes, areas where sheep could be penned. This high ground in the southwest of Pirton could well have been an area used for keeping sheep before being brought into arable cultivation. Other origins are, of course, possible. Might the first element of the name Tingley be not Old English týned, ‘enclosed’, but another derivative of týnan, ‘to fence or close’, perhaps an unattested but plausible *týne, ‘an enclosure’, referring to the possible sheepcote?

The Lidar results for just a small patch of land, only sixteen hectares in extent, give us a complex picture with much to digest and attempt to interpret. As a relatively new technique in archaeology, its potential is only just beginning to be tapped.

Collecting your Covid-19 memories

North Hertfordshire Museum has been collecting objects and archive to help tell the story of the impact of Covid-19 on our local community. If you live work or study in North Hertfordshire we want to collect some personal stories and experiences from you in the questions below. Your answers will form part of our Covid collections to help show life during the Covid era in the future. Please email northhertsmuseum@north-herts.gov.uk. with your responses.

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Your answers will form part of our Covid Collections to help show life during the Covid era in the future. As such they may be used as historical resources by researchers, or by the North Hertfordshire Museum in displays. Your data will be stored securely and not used in its entirety by North Hertfordshire Museum i.e. if used we may say ‘Michael a builder from Hitchin said’ or ‘Claire from Baldock told us’ or ‘a resident from Brand Street explained’. For any queries or concerns please email northhertsmuseum@north-herts.gov.uk.

 

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