William Devereux, Baron Devereux of Lyonshall held Lyonshall Castle controlling a strategically vital approach to the border of Wales in the time of?
Edward I of England Edward I (17/18 June 1239 – 7 July 1307), also known as Edward Longshanks and the Hammer of the Scots (Latin: "Malleus Scotorum" ), was King of England from 1272 to 1307. He spent much of his reign reforming royal administration and common law. Through an extensive legal inquiry, Edward investigated the tenure of various feudal liberties, while the law was reformed through a series of statutes regulating criminal and property law. Increasingly, however, Edward's attention was drawn towards military affairs.
William Russell (knight) Sir William Russell (1257–1311) was an English nobleman, knight, and holder of a "moiety" of the feudal barony of North Cadbury, Somerset, but spent most of his life engaged in the administration and defence of the Isle of Wight, where he obtained by marriage the manor of Yaverland. He served as constable of Carisbrooke Castle, and sat in parliament on two occasions, firstly as burgess for Great Bedwyn, Wiltshire, and then for the County of Southampton. As a baron his military service was called on several times by King Edward I "Hammer of the Scots".