The Virtual 3-D Reconstruction of 12th-Century Lincoln Castle

Dr Jonathan Clark, Historic Buildings Director, FAS Heritage and project lead for the Castle Studies Trust funded 3-D Reconstruction of C12 Lincoln Castle explains how it was done and the challenges faced in doing it.

A virtual 3-D reconstruction of Lincoln Castle as it may have looked in the late 12th-century has been completed by Peter Lorimer, Pighill Illustration in collaboration with FAS Heritage.  The reconstruction was funded by the Castle Studies Trust and made possible through 15 years of archaeological research for the Lincoln Castle Revealed project. The project consisted of a £22m repair and restoration programme to conserve the site and renew the visitor experience funded by the National Lottery Heritage Fund, Lincolnshire County Council and the European Regional Development Fund. The programme provided opportunities for research-led archaeology which yielded a wealth of new information about the site.

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Mondern day Lincoln Castle from the west copyright Andy Tyner Photography on behalf of FAS Heritage and Lincolnshire County Council
Lincoln Castle as it could have been in the late C12 copyright FAS Heritage and Pighill Illustrations

William the Conqueror established Lincoln Castle in 1068 in the walled enclosure of the former Roman colonia. The Lucy Tower motte was built in its southwest corner reusing the west and south walls to defend the new inner bailey. The next 100 years saw rapid development: originally earth and timber, the Conquest-period castle was replaced in masonry, a process now understood to have started by the 1080s including East and West Gates; by the early 12th century the stone enclosure of the bailey and internal gate ranges were complete, along with the Lucy Tower shell-keep and later Observatory Tower. Inner bailey buildings were also contacted during excavation including the Great Hall, stables, East Range and the Observatory Tower motte and ditch, all contributing information to the reconstruction. Evidence for a lost South Gate to match East and West Gates was found; along with a reappraisal of the early form of the Lucy Tower shell-keep it provided information about a former southern enclosure. This enclosure was abandoned, probably by the early 13th century, when the castle contracted to the form of the current enclosure.

It was the culmination of this intense century of development, arrived at by the late 12th century that was selected for the digital reconstruction.

Plan of Lincoln Castle in C12 copyright FAS Heritage

Archaeological excavation and detailed building recording formed most information about the early form of the castle, but the assembly of the 3-D reconstruction led to reappraisal of other parts of the castle; previously unnoticed anomalies were discovered which required further analysis.

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The lost southern enclosure and South Gate were both identified from fragmentary evidence and establishing the exact position and size of the original south wall presented a challenge. When reconstruction began there was little information on this wall except a projection of the line of the southern colonia wall. This placed the south wall slicing through the Lucy Tower motte – a relationship which did not seem likely. However, recent work on this part of the motte during a programme of banks stabilisation provided more information. A substantial medieval masonry wall measuring 3m wide and traversing the Lucy Tower motte west-east was revealed. The wall is probably founded on the Roman wall indicates the motte may have been constructed against it, flattening its southern side.

The Lucy Tower Motte after the removal of dense vegetation.  The fragmentary masonry remains of a structure can be seen towards the top of the trench. Copyright FAS Heritage

The reconstruction provides a sense of where concentrations of occupation were; around East Gate and Observatory Tower, the Lucy Tower, the Great Hall and around West Gate. With the discovery of South Gate it is easier to appreciate how these areas were autonomous. Other areas within the castle, particularly the western side, are presented as large open spaces; without further investigation these zones cannot be reconstructed easily.

The Lucy Tower, sat upon on an enlarged motte, can now be shown with its original east and west chamber blocks, internal ranges and window overlooking the city. With the tower, wing walls and South Gate, these formed a discrete enclosure.

Detail on the form of the Observatory Tower in the late 12th century can also be added. The tower is shown as a gaol tower which replaced a predecessor developed by Earl Ranulf during the Anarchy, later commandeered to become the county gaol. A stone ‘skirt’ around the base of the motte and a motte ditch were found and formed a hard circuit detaching the gaol from the rest of the castle.

The reconstruction will be made available across a range of media. The analytical process and collaboration with Pighill Illustration provided an opportunity to translate the archaeological study of the castle into a tangible representation. It enables the results of the research programme to be conveyed to a wide audience and goes hand-in-hand with the publication of a book about the Lincoln Castle Revealed Project in July 2021.

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Taking Care of Herself. Duchess Richardis of Schleswig and the siege of Sønderborg castle (1358)

Dr Stefan Magnussen of the University of Leipzig looks at the extraodinary case of Duchess Richardis of Schleswig who in the C14 protected her rights over a castle at the expense of her husband’s.

In south-western Denmark, not far from the mouth of the Flensburg Fjord, rises a red-brick castle called Sønderborg (Eng: Southern Castle). Although it is hardly known beyond Denmark, at least its name still radiates throughout Europe as the eponym of the dynasty that originated from it. We do not know today who built the castle, which was first mentioned in 1253, but the eventful history as a residence, in which many men have left an architectural imprint, is well documented.

Aerial photo of Sønderborg Slot (unknown photographer, 1994), © Museum Sønderjylland]

Yet there were also some women who left their marks – this is especally true for Queen Dowager Dorothea of Saxe-Lauenburg, who commissioned the magnificent palace chapel. One key figure, however, has more or less fallen into oblivion: Duchess Richardis of Schleswig, who played a brief, but prominent role during a royal siege of 1358. Not so much as a leader of defence, but rather as a ruler who self-confidently defended her own interests – even if it meant turning against her spouse.

Drawing of Sønderborg Slot in its supposed structural state prior to the massive reconstructions of 16th Century. Drawing by former Head of the Museum Sønderborg, Jens Raben (1880-1960), © Museum Sønderjylland

Overall, very little is known about this woman. She was born around 1320 as the daughter of the Counts of Schwerin-Wittenburg and probably married Duke Valdemar V of Schleswig around 1338, presumably in the course of alliance negotiations. As was customary in those years, she was probably assigned the ducal secondary residence of Sønderborg with the island of Alsen as life tenancy, which made her Lady of Sønderborg for almost half a century until her death around 1386. Nevertheless, apart from the fact that her chaplain came from her native Wittenburg, little is known about her regency. Even her burial place remains a secret.

The preserved Seals of Richardis of Schleswig, indicating her heritage from the Counts of Schwerin-Wittenburg. Source: Thiset, Danmarks Kongelige Sigiller, Tab. 42

And yet what makes this enigmatic princess interesting is her key role in her husband‘s conflict with King Valdemar IV of Denmark. Understanding this and her stuation, it is worth telling the story from the beginning: In 1340, King Valdemar IV inherited a difficult legacy, as his realm was almost entirely pledged to various neighbours. Before homage was paid, a series of treaties reorganised these pledges, transferring almost all of Jutland to Duke Valdemar V, who in turn mortgaged his territories to the Counts of Holstein, who were among the leading negotiators. Within a few years, the Danish king succeeded in almost completely redeeming his realm, with the exception of some districts like Ribe Castle on the North Sea, which was still in ducal possession. At the same time, the Duke also succeeded in redeeming two thirds of his duchy from the Counts, who, however, remained  holding  the ducal principal residence at Gottorp. Since the secondary residence of Sønderborg had also been ceded to the Duchess, the castle district of Ribe constituted the last ducal power base. Notwithstanding this, King Valdemar IV. pressed for this pledge to be dissolved in 1351, which severely curtailed the Duke‘s power. In turn, the duke allied himself with the loyal Jutish nobility and the Counts of Holstein against the Danish king. An early conflict was settled in 1353, but flared up again in 1358.

Map of medieval Denmark with the island of Alsen and the castles mentioned in the article, by Stefan Magnussen

King Valdemar IV now ventured an advance on the island of Alsen, which lay just off the coast of the duchy in the direction of the kingdom. Within three days he was able to bring Nordborg Castle (Eng: North Castle) under his control, making the conquest of Sønderborg only a matter of time. But it was not the Duke awaiting him there, but Duchess Richardis. The main source for the recreation of the processes now taking place is the contemporary and royalist Younger Zealand Chronicle, which, albeit otherwise only reporting sieges in short, recounts the meeting in surprisingly colourful words. Richardis, together with „her girls“, which probably referred to her dames, had approached the King outside her castle. As she was a fine, clever and, morever, eloquent person, the Danish king immediately recognised her noble personality and decided that his friendship with her brother was more dear to him than enmity with the Duke. Both sides thus agreed that Richardis would be allowed to keep her estate undiminished in return for her promise that no harm would derive from it. That these events actually occurred is witnesses by a preserved charter, which also informs us of another juicy detail: Richardis also banned her husband from staying in his castle. It was only on two days a year that he was allowed to stay there.

Seals attached to the Charter from June 19, 1358, source: Dansk Nationalarkivet, Ny Kronologisk Række (1980–1981), Nr. 832-c.

So, how can we explain these events and, above all, this dazzling account? Apparently, in the face of the siege, Richardis proved to be a princess with a sense of rank who knew how to protect her sphere of power. With Duke Valdemar V having only a small remaining territory and little income since the loss of his most important castle of Ribe, Richardis had little to rely on from her politically incapacitated husband. Yet, Richardis probably anticipated the royal dilemma, for her brother was one of the king‘s key allies. The duchess and the Danish king thus agreed on a mutually beneficial solution that would potentially establish a royal bridgehead at the doorstep of the Duchy. This agreement, however, had a crucial pitfall in that the castle de iure belonged to the Duke, which legally limited the authority of the Duchess to freely dispose of it. But both sides sought to actively influence the interpretative authority of this conflict between norm and practice via the contract as well as the chronicle. This is indicated by the comparatively extensive set of 21 seals, which may have been intended to symbolise broad support by local elites, but also by the very favourable account of Richardis, which was probably intended to strengthen her personal authority and thus bestow legitimacy on the agreement. Both seem to have succeeded in this endeavour, for in the winter of 1372/73 Valdemar IV was able to use Sønderborg castle as his bridgehead during his advance on the city of Flensburg, and Duke Valdemar V is never again witnessed on Sønderborg Castle until his death in 1364.

Even though Richardis has been forgotten down the years, her brief, but crucial role during the siege of Sønderborg is a vivid testimony to the often concealed power of princesses, who, instead of being a sidekick to their spouses, started themselves to kick if necessary.

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