Roger de Birthorpe (c.1280–c.1345) was an English landowner and lawyer who had a distinguished career in Ireland as a judge, becoming Chief Baron of the Irish Exchequer in 1327.[1] His career however was marked by violence and controversy: he fled to Ireland after being imprisoned for trespass after a raid on Sempringham Priory, although he was later pardoned for his part in the raid. He was a friend and neighbour of Sir Geoffrey Luttrell of Irnham, who commissioned the Luttrell Psalter.[2]