The name
Peel means a fortified site. In 1896 the antiquarian
W. G. Collingwood conducted excavations on the island and discovered: the remains of fortifications and other stone buildings, chambers cut into rock, metal-working
slag, a fragment of a domestic
mortar, and pottery. These he dated to the mediaeval period. There is no record that this was ever a conventional castle, and the antiquarian conjectures that it was a short-lived
stronghold of a petty outlaw. The local name
Gridiron derives from the parallel rock ridges running the length of the island. The name
Montague Island derives from
Elizabeth Montague (1743–1827), a descendent of
George Monck, 1st Duke of Albemarle, who was gifted the local
manor by
King Charles II. Peel Island has belonged to the
National Trust since it was given to them by
John Montagu-Douglas-Scott, 7th Duke of Buccleuch, along with of woodland, in 1932. ==Wild Cat Island==