FLO4708528: Knight of the Order of St. Catherine and Knight of the Order of the Sword. The Order of St. Catherine was founded by the Christian princes to protect the pelerins of Mount Sinai, who came to venerate the relics of St. Catherine, but also to protect them from desecration from the 11th to the 15th centuries. However, according to the Catholic encyclopedia, the knights of St. Catherine were not an order, nor secular, nor regal. The order of the Sword, or the sword-bearers, was a military order in order to prepare the crusade against the Prussian peers in the 13th century (uncarried out crusade). / Bridgeman Images