Sir William de Fenton(c. 1235 – 1315),[1] Lord of Baikie and Beaufort, was a 13th-14th century Scottish noble.
[3] He was one of Robert de Brus, Lord of Annandale's auditors during the arbitration for the Crown of Scotland between 1291 and 1292.
[4] He performed homage to King Edward I of England at Berwick-upon-Tweed on 28 August 1296.
Through his marriage to Cecilia,[6] a co-heiress of John Bissett of Lovat, Beaufort passed into the Fenton family.
His life and titles contributed to the legacy of the Fenton family in Scotland.