St. Raymond Nonnatus (d. 1240) was a Mercedarian. The main apostolate of the Order was ransoming Christian slaves, and when St. Raymond ran out of money, he offered himself as a hostage.

Short biography of St. Raymond Nonnatus.

St. Raymond is called "Nonnatus" because he was "not born"; he was delivered by caesarean section after his mother died.

Profile of Raymond (or "Raymund") Nonnatus.