Marisco Castle is a misnomer. The castle was built by Henry III in 1243 after the downfall of his rebellious island subjects, the de Marisco family. In that year the Sheriff of Devon gave instructions that the new Governor of the island should build a tower and a bailey wall. These were to be financed from the sale of rabbits, for Lundy was a Royal Warren.
The National Trust’s Archaeological Survey of Lundy (1989) states that:
The castle comprised a small Keep, measuring 51ft by 38ft, with 3ft thick walls, and with a small bailey on the landward side. This was enclosed within a curtain wall (although this may have been a 17th century addition) and a ditch, except towards the sea where the rock is almost perpendicular. The Keep was rectangular in design, constructed of local granite with the walls inclining inwards. The few windows are very small and these are in the south-facing wall. At some point the Keep’s crenellations have been filled-in and the walls built up to the height of the earlier domed chimneys at the four corners.
Facing North Devon, the castle commands a fine view of the east coast of Lundy, the landing bay and the channel. Myrtle Langham writes, “at first it was used by a succession of keepers, with garrison, appointed by the King and until Sir John Borlase Warren built the Farmhouse (Old House) about 1775-80 it was, as far as we know, the main building on the island”.
Thomas Bushell, who held Lundy for the King during the Civil War, claimed that he had “built it from the ground”. At that time he added the East Parade or Bastion with batteries on the east and south sides. The Curtain walls were reinforced or rebuilt of coursed, random rubble. On the parade ground there was a complex of buildings below the keep. One of these, at the western corner, is known as The Old House and may well have been Governor Bushell’s private residence at a time when the Castle was garrisoned. The Keep was used to house convicts by Thomas Benson, who leased the island from 1748-54, and at that time there were two houses on the parade in front of the Keep.
By 1775 the Keep was ruinous and Sir John Borlase Warren deliberately dismantled the castle’s defences to provide building stone for works elsewhere on the island but the eastern end of the ditch and rampart survive quite well. In 1824, Sir Aubrey de Vere Hunt’s steward wrote that “one half of the oald castle fell first Winter I came to Lundy and the other part came down last Winter”. Other parts were described as still being in good order.
In the 1850s Mr Heaven repaired the keep and converted it into three cottages facing the central courtyard for his labourers. North and South Cottage had two tenements each and East Cottage facing the entrance had one. They all had metal roofs. After the Granite Company failed in 1868, islanders occupied the company’s abandoned buildings, but the Castle cottages remained in intermittent use until the end of the century and sometimes housed shipwreck victims.
In 1870 one cottage was inhabited by the herdsman Withycombe, his wife and their lodger, an old sailor-turned-mason called Sam Jarman. Another was the home of the carpenter Joseph Dark and his family and the four roomed cottage facing the entrance was used by fishermen from Sennen during the summer fishing season, one of whom was George Thomas, the builder of Hanmers. By 1928 the cottages were no longer habitable and in that year Martin Harman commissioned the architect Charles Winmill (Secretary of SPAB 1898, pupil of Leonard Stokes and follower of Philip Webb) to do a report on the Castle. Mr Winmill proposed clearing the shell, strengthening the walls and covering the whole with a flat concrete roof, to provide perhaps a cattle bower. The estimated cost was £1,430 and so the report was ignore