John Devereux, 1st Baron Devereux

John Devereux, 1st Baron Devereux, KG, was a close companion of Edward, the Black Prince, and an English peer during the reign of King Richard II.

John Devereux of Whitchurch Maund was the son of John Devereux of Manne (Maune or Maund, Bodenham) and his wife Margaret Barre. His father came of age in 1323, and fought at the Battle of Crécy. His great-grandfather was William Devereux through his first wife Alice Grandison, and this William was called to Parliament as 'Lord Deverois' on 6 February 1299.

Rising debt related to the terms of the Dictum of Kenilworth led Baron William Devereux to financial arrangements permitting the alienation of Lyonshall Castle, the caput of the Barony. His grandson, Stephen Devereux of Bodenham and Burghope seized the castle by force in 1305 and brought suit for its return, but his plea was denied, as his grandfather was still alive. Stephen would never regain Lyonshall in his lifetime, nor would he inherit the title upon William’s death. His younger brother, John Devereux of Manne and son, William Devereux of Bodenham, remained close throughout their lifetime united in their desire to regain their lost patrimony. John Devereux of Whitchurch Maund would carry on this alliance with his cousin, William, and William's son, Walter Devereux of Bodenham. As John Devereux of Whitchurch Maund regained royal favor, he promoted the advancement of his cousin’s grandson, Walter Devereux of Weobley, at court.