Dr Andy Moir of Gloucestershire Historic Buildings Group takes a look at the results from their attempts to date the outer ward of Sudeley Castle
Tree-ring dating at Sudeley Castle has established that the outer courtyard roofs were constructed over three years between 1569 and 1572. This result overturns the previous history which indicated that the castle roofs were destroyed during the Civil war and identifies that the roofs were likely built by Edmund Brydges (the 2nd Lord Chandos).
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Sudeley Castle has Saxon origins, but its history really developed from 1441 with Ralph Boteler (Baron Sudeley and Lord Chamberlain of the King’s Household) who set about developing a castle to reflect his new-found status. In later Tudor times, Thomas Seymour was granted the castle by Henry VIII and after marrying the king’s widow, Katherine Parr he set about refurbishment of the Sudeley Estate. Katherine became pregnant at a relatively late age and unfortunately died a few days after childbirth. Following her death and Seymour’s arrest for treason following his desperate attempt to grab power at the expense of his brother Edward Seymour, the castle was then gifted to John Brydges, the Constable of the Tower of London. This gift by Queen Mary I was followed with the title of Lord Chandos being granted to the family. John’s successor, Edmund Brydges seems to have been further developing the castle, enhancing the work of Boteler and Seymour and the family contributed to Winchcombe with the building of Almshouses by Edmund’s wife Dorothy. The Brydges family maintained the castle throughout the rest of the Tudor times and supported the Royalist cause following the start of the Civil War.
Sudeley had been used as the base by both Prince Rupert and Charles I from where they had launched attacks on Cirencester and preparations had been made to attack Gloucester. Following these failed attempts, Parliamentary troops had successfully besieged the castle on two occasions, bombarding the castle with cannon and after the second siege, the order was given for a systematic slighting (made un-inhabitable). Roofs were taken off and many walls were razed to the ground. Details of the destruction became clear when Lady Jane Brydges widow of George Chandos tried to sue for recompense. This was shown by depositions in the archives taken from five craftsmen stating that the castle had been fully destroyed and this had been signed off by two judges from Gloucester, Edward Slaughter and Robert Megge, but as the dendrochronology report went onto show, the slighting was not as comprehensive as claimed and roofs to the East, West and part of the North range of the outer courtyard were still intact.
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It had previously been thought that the castle had been left in ruins for the next 180 years, and few of the original structures at Sudeley Castle were thought to have survived before extensive restoration in the 19th century funded by the Dent brothers and their heir John Coucher Dent and his wife Emma.
In 2025 castle archivist Derek Maddock invited the Gloucestershire Building Recording Group (GBRG) to survey the outer courtyard roofs. Unexpectedly, the survey identified that east, west and north range roofs of the outer courtyard contained mainly oak timbers that were likely to be Elizabethan. As this finding completely changed understanding of the castle’s history, a project to precisely tree-ring date the roofs was conceived. This project was supported by the Castle’s owner, Lady Ashcombe, and funded by the Castle Studies Trust (www.castlestudistrust.org).
The 2026 project saw 30 pencil-like core samples drilled from the castle roofs. Tree-ring series from twenty of these timbers matched together to form a 159-year mean chronology that was dated to span 1413 to 1571. The oldest tree used in construction of the roof started growing in 1413 and the trees were all felled between the spring of 1569 and the winter of 1571/2. As it was common medieval practice to convert the tree into timbers before they seasoned, construction of the east, north and west range roofs of the outer courtyard likely occurred between 1569 and 1572. To give some idea of the scale of the construction, the west, north and east range roofs are around 36m, 38m and 46m in length, respectively. Yet still the carpenters of the day likely managed to complete this huge construction over just three years. This result therefore overturns the previous history which indicated that the castle roofs were destroyed during the Civil war and identifies that the roofs were likely built by Edmund Brydges (the 2nd Lord Chandos). A fantastic development in the history of Sudeley Castle.