The Order of Saints Maurice and Lazarus (Italian: Ordine dei Santi Maurizio e Lazzaro) (abbreviated OSSML) is a Roman Catholic dynastic order of knighthood bestowed by the royal House of Savoy. It is the second-oldest order of knighthood in the world, tracing its lineage to AD 1098, and it is one of the rare orders of knighthood recognized by papal bull, in this case by Pope Gregory XIII. In that bull, Pope Gregory XIII bestowed upon Emmanuel Philibert, Duke of Savoy and his Savoy successors, the right to confer this knighthood in perpetuity. The Grand Master is, Vittorio Emanuele, Prince of Naples, also known as the Duke of Savoy, the eldest son of the last King of Italy, Umberto II of Italy. However, Vittorio Emanuele's cousin once removed Prince Aimone, Duke of Aosta claims to be grand master as his father claimed to be head of the house of Savoy. The order was formerly awarded by the Kingdom of Italy (1861–1946) with the heads of the House of Savoy as the Kings of Italy. Originally a chivalric order of noble nature, it was restricted to subjects of noble families with proofs of at least eight noble great-grandparents. The order's military and noble nature was and is still combined with a Roman Catholic character. After the abolition of the monarchy and the foundation of the Italian Republic in 1946, the legacy of the order is maintained by the pretenders of the House of Savoy and the Italian throne in exile. The order is estimated to include about 2,000 members around the world, with about 200 in the United States. The Order also has roster consultative status with the United Nations, as part of the U.N.'s ECOSOC. Source: Wikipedia (en)