At some time before 27 August 1337[4] he married a great heiress, Muriel de Moels (1322–1369),[4] the elder of the two daughters and co-heiresses of John de Moels, 4th Baron Moels, feudal baron of North Cadbury in Somerset, by his wife Joan Lovel, a daughter of Richard Lovel, Knt., Lord Lovel of Castle Cary[4] in Somerset.

[4] By his wife he had one son and two daughters: Courtenay died on 9 June 1362, having 16 years earlier in 1346 petitioned the Pope for an indult for plenary remission at the hour of death.

[4] His wife's share of her paternal inheritance included the manors of King's Carswell and Dunterton[6] in Devon, and Blackford, Holton and Lattiford in Somerset.

[7] His landholdings increased greatly after inheritances from his marriage of many lands of the feudal barony of North Cadbury.

His landholdings included, in Devon: Woodhuish, in the parish of Brixham;[8] Kings Carswell; Dunterton;[9] Plymtree, which he purchased and was recorded as lord of the manor in 1345;[10] and Sutton Lucy and Lucyhays,[11] in Colyton hundred.