This sword pommel is decorated with the arms of Pierre de Dreux, Duke of Brittany, who was captured during the Seventh Crusade at the Battle of al-Mansurah in Egypt on February 8, 1250. He was later ransomed and released, but died during his return to France.
Rome. Museo Nazionale di Castel Sant'Angelo. "Monaci in Armi," November 29, 2004—March 29, 2005.