elder brother, who inherited the paternal estate of Tremayne, was John de Tremayne, a Member of Parliament for Cornwall in 1366 and 1369, who died without male progeny leaving two daughters and co-heiresses. Thomas's younger son was Rev. Thomas Tremayne, Rector of Aveton Giffard and a Canon of Exeter Cathedral in Devon. Nicholas Tremayne (born 1368) Nicholas Tremayne (born 1368), eldest son of Thomas Tremayne and Isabella Trenchard, married as his first wife Joan Dodscombe, daughter and heiress of Sir John Dodscombe. Thomas Tremayne (d.1482) Thomas Tremayne (d.1482), eldest son of Nicholas Tremayne (born 1368), married Elizabeth Carew, a daughter of "Thomas Carew", apparently Thomas Carew (d.1446) of Mohuns Ottery in Devon. In 1448 Edmund Lacey, Bishop of Exeter, granted the couple a licence to celebrate divine service "within their mansion of Collacombe", effectively to maintain a private chapel. The arms of Carew (Or, three lions passant in pale sable) are visible on the 1588 Tremayne monument in Lamerton Church. John Tremayne (1452-1504) John Tremayne (1452-1504), eldest son of Thomas Tremayne (d.1482), was Sheriff of Cornwall in 1486 and 1487. He married Jane Warre, a daughter of Sir Francis Warre. By his deed of 1493 he settled his lands in Devon in tail male on his heirs male forever. Thomas Tremayne (1496-1562/3) Thomas Tremayne (1496-1562/3) of Collacombe, one of Prince's Worthies of Devon. He was the eldest son of John Tremayne (1452-1504), married Phillipa Grenville (d.1571), eldest daughter of Sir Roger Grenville (1477–1523) of Stowe, Kilkhampton in Cornwall and lord of the manor of Bideford in Devon, Sheriff of Cornwall in 1510–11, 1517–18, 1522, ancestor of John Granville, 1st Earl of Bath (1628-1701). Her brothers included Digory Grenville of Penheale, Cornwall and John Grenville (c.1506-c.1562), three times MP for Exeter, in 1545, 1554 and 1558. By Phillipa Grenville he had 16 children, including 8 sons, the eldest surviving three of which succeeded successively to Collacombe. Edmund Tremayne, the second son, was Chief Secretary for Ireland. A large standing monument erected in 1588 by his 3rd surviving son Degory Tremayne (d.1601) of Collacombe, survives in Lamerton Church which includes "lively" statues of five of his brothers, with lengthy biographical inscriptions in verse and a profuse display of the family's heraldry including the arms of Grenville and Trenchard. Roger Tremayne (d.1571/2) Roger Tremayne (d.1571/2), eldest son and heir, who married Anne Coffin, a daughter of Richard Coffin (d.1555) of Portledge in the