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.
[3] Aaron not only advanced money on land, but also on corn, armour and houses, and in this way acquired an interest in properties scattered through the eastern and southern counties of England.
Upon his death Henry II seized his property as the escheat of a Jewish usurer, and the English crown thus became universal heir to his estate.
The actual cash treasure accumulated by Aaron was sent over to France to assist Henry in his war with Philip Augustus, but the vessel containing it went down on the voyage between Shoreham and Dieppe.
However, the indebtedness of the smaller barons and knights remained, and fell into the hands of the king to the amount of £15,000, owed by some 430 persons distributed over the English counties.