Thomas Hatfield or Thomas de Hatfield (died 1381) was
Bishop of Durham from 1345 to 1381 under
King Edward III. He was one of the last warrior-bishops in England.
He was born around 1310, presumably in one of the several British towns named Hatfield. He entered the employment of the king (Edward III) on 26 October 1337.[1]
In 1380, he drew up a covenant to leave £3000 (equivalent to £2,400,000 in 2021) 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.[5]
Fryde, E. B.; Greenway, D. E.; Porter, S.; Roy, I. (1996). Handbook of British Chronology (Third revised ed.). Cambridge: Cambridge University Press.
ISBN0-521-56350-X.
Wrottesley, George (1898). Crecy and Calais. Harrison & Sons.
Greenwell, William (1857). Bishop Hatfield's survey, a record of the possessions of the see of Durham, made by order of Thomas de Hatfield, bishop of Durham. With an appendix of original documents, and a glossary.
https://archive.org/details/bishophatfieldss00durh/page/239/mode/2up