[1] Hatfield was Receiver of the Chamber when he was selected to be Lord Privy Seal in late 1344.

[2] Hatfield was elected on 8 May 1345 in succession to Richard de Bury,[1] and was consecrated on 7 August 1345.

[3] Thomas fought in King Edward's division at the Battle of Crécy on 26 August 1346.

[4] In 1380, he drew up a covenant to leave £3000 (equivalent to £2,800,000 in 2023) to endow Durham College, Oxford, which was the primary endowment of the college and enabled the construction of its quadrangle, chapel and surviving library, now part of the Durham Quadrangle of Trinity College, Oxford.

[3] He is buried near the choir stalls in Durham Cathedral beneath the Bishop's Chair.