Roger de Mowbray, 1st Baron Mowbray (1254 – 21 November 1297), was an English peer and soldier.
The son of another Roger de Mowbray, and grandson of William de Mowbray,[1] he served in the Welsh and Gascon Wars. He was summoned to the Parliament of Simon de Montfort in 1265, but such summonses have later been declared void. However, in 1283 he was summoned to Parliament by King Edward I as Lord Mowbray.[2]
Mowbray married Rose, a daughter of Richard de Clare, 6th Earl of Gloucester. They had at least two children:
Roger de Mowbray was buried in Fountains Abbey.
. A Genealogical History of the Dormant, Abeyant, Forfeited, and Extinct Peerages, of the British Empire. Bernard Burke . Mowbray-Earls of Nottingham, Dukes of Norfolk, Earls-Marshal, Earls of Warren and Surrey . London . Wm Clowes and Sons . 1866 . 387 . 9780806307893. Reprinted: 1985.