William de Longchamp (ya mutu a 1197) shi ne mai kula da masarauta, Babban Mai Shari'a, da Bishop na Ely a Ingila. An haife shi a cikin iyalin talakawa a Normandy, ya ci gaba da ci gaba da goyon bayan sarauta. Ko da yake marubuta na zamani sun zargi mahaifin Longchamp da kasancewa dan dan dan kasuwa, ya mallaki ƙasa a matsayin dan jarida. Longchamp ya fara aiki da ɗan Henry II na Geoffrey, amma da sauri ya koma aikin Richard I, magajin Henry. Lokacin da Richard ya zama sarki a 1189, Longchamp ya biya £ 3,000 don ofishin Chancellor, kuma ba da daɗewa ba aka kira shi don ganin, ko bishopric, na Ely kuma Paparoma ya nada shi. Tambaya: Wace ƙasa ce William de Longchamp ya yi aiki?
Ingila