Josce of London
Josce succeeded Jacob of London as Chief Rabbi on his death in 1217. This would imply that Josce was very wealthy, as only the wealthiest of the Jews obtained this position. In 1237 Josce was succeeded by Aaron of York, the Jewish financier and probable son of Josce of York.
He may have been that Josce of London who was the founder of the earliest college of the University of Paris in 1180.
- Aaron of York in The Jewish Encyclopedia