The great military orders had their origin in the crusades, from which they retain the common badge of every order of knighthood the cross worn on the breast.The oldest of these, the Knights Templar, has served as a model for all the others.Thomas of Canterbury, an order of hospitallers for the service of English pilgrims.
In the same category should be included the Order of Santiago which spread throughout Castile, Leon, and Portugal.
A regular order of knighthood means a brotherhood or confraternity which combines with the insignia of knighthood the privileges of monks.
This supposes recognition on the part of both Church and State; to belong to the regular clergy, they needed the pope's confirmation; they could not wear the sword of knighthood without the authorization of the prince.
Michael, attributed to King Alfonso I of Portugal (1176), nor of the Order of the Ship, which St.
Louis was supposed to have founded on the eve of the crusade to Tunis where he died (1270), nor of that of the Argonauts of St.