Humphrey de Bohun, 4th Earl of Hereford

Humphrey de Bohun, fourth earl of Hereford (c. 1276–1322), succeeded his father in 1298 as earl of Hereford and Essex. In 1302 he married Edward I's daughter Elizabeth of Rhuddlan. He fought in the Scottish wars and was captured at Bannockburn in 1314, later exchanged for Robert Bruce's queen.

A leader of the Ordainers who imposed the Ordinances of 1311 on Edward II, he later turned against the Despensers and joined the earl of Lancaster's revolt. He was killed leading the rebel assault at Boroughbridge on 16 March 1322.