Thomas's inheritance on Richard's death in 1422 gave him a reasonable degree of financial security throughout his life.
He studied at Oxford from 1416 to 1420; was ordained a priest in 1427; and was appointed to the rectory of Kirk Deighton (about 15 miles north-west of Hunslet) in July 1433 (from which he resigned in 1443, apparently because his duties at Oxford prevented him from fulfilling pastoral duties in the rectory).
Thus his career was focused on Oxford, although he was also chaplain to Henry VI sometime in the period 1434–45; had a brief spell at the rectory of St Peter's Cornhill, in London, from November 1445; and became a canon of Wells on 7 February 1449.
February 8, 1449 saw Oriel College granting him rent-free accommodation for the rest of his life.
[2] Gascoigne compiled his magnum opus, Dictionarium Theologicum (or Liber de Veritatibus), between about 1434 and his death in 1458.