Aaron of Lincoln was an English financier (born at Lincoln, England, about 1125, died 1186). He is first mentioned in the English pipe-roll of 1166 as creditor of King Henry II for sums amounting to £616 12s 8d in nine of the English counties. He conducted his business through agents, and sometimes in conjunction with Isaac, fil Joce; by these methods building up what was practically a great banking association that spread throughout England. Wikipedia
Both are, by tradition, if not documented record, associated with Lincoln's Norman Jewish community. www.norman-world.com/angleterre/Patrimoine_architectural/...
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