Caursines

[L. Lat. caorcini, caursini, corsini.] Italian merchants who came into England in the reign of Henry III., where they established themselves as money lenders, but were soon expelled for their usury and extortion.

Cowell. Blount.

Spelman, voc.

Caursini.

Matth. Paris, cited ibid. They seem to have been Lombards, deriving their name from a town in Lombardy.