Tattershall Castle has its origins in either a stone castle or a fortified manor house, built by Robert de Tateshale in 1231. This was largely rebuilt in brick, and greatly expanded, by Ralph, 3rd Lord Cromwell, Treasurer of England, between 1430, and 1450.

Brick castles are less common in England than stone or earth and timber constructions; when brick was chosen as a building material it was often for its aesthetic appeal or because it was fashionable. The trend for using bricks was introduced by Flemish weavers. There was plenty of stone available nearby, but Cromwell chose to use brick.^[2] About 700,000 bricks were used to build the castle, which has been described as “the finest piece of medieval brick-work in England”.

Of Lord Cromwell’s castle, the 130 foot high^[4] Great Tower and moat still remain. It is thought that the castle’s three state rooms were once splendidly fitted out and the chambers were heated by immense gothic fireplaces with decorated chimney pieces and tapestries. It has been said that the castle was an early domestic country mansion masquerading as a fortress. Cromwell died in 1456, the castle was initially inherited by his niece, Joan Bouchier, but was confiscated by the Crown after her husband’s demise. Tattershall castle was recovered in 1560 by Sir Henry Sidney, who sold it to Lord Clinton, later Earl of Lincoln, and it remained with the Earls of Lincoln until 1693. It passed to the Fortescues, but then fell into neglect until 1911 when it was purchased and restored by Lord Curzon of Kedleston, who left it to the National Trust on his death in 1925. Lord Curzon had undertaken restorations on it between 1911 and 1914. It remains today one of the three most important surviving brick castles of the mid-fifteenth century.

The Fortescues were always absent landlords so it cannot really be claimed as a Fortescue Seat but is of interest.