Sir Hugh de Courtenay, 2nd/10th Earl of Devon (12 July 1303 – 2 May 1377), 2nd Baron Courtenay, feudal baron of Okehampton and feudal baron of Plympton, played an important role in the Hundred Years War in the service of King Edward III. His chief seats were Tiverton Castle and Okehampton Castle in Devon. The ordinal number given to the early Courtenay Earls of Devon depends on whether the earldom is deemed a new creation by the letters patent granted 22 February 1334/5 or whether it is deemed a restitution of the old dignity of the de Redvers family. Authorities differ in their opinions, and thus alternative ordinal numbers exist, given here.