I thought it was the Knights Templar. You'd deposit your money (with them in Europe) before your pilgrimage, then redeem it later (from them in the Holyland).

I thought it was the Knights Templar. You'd deposit your money (with them in Europe) before your pilgrimage, then redeem it later (from them in the Holyland). Kept you from getting robbed along the way. They became pretty savy with banking, and the aristocrats and church did not like that, so killed them all.