January 7, 1451 Amadeus VIII, last anti-pope Felix V (1439-49), dies at 67 January 14, 1451 Franchinus Gaffurius, composer February 3, 1451 Murad II, sultan of Turkey (1421-51), dies April 19, 1451 Alam Shah of Delhi resigns throne April 22, 1451 Isabella I, of Castile, Queen of Spain (1479-1504), patron of Columbus May 17, 1451 Engelbert II, earl of Nassau-Dillenburg-Dietz/viceroy of Luxembourg August 2, 1451 Elisabeth von G”rlitz, duchess of Luxembourg, dies September 21, 1451 Cardinal Nicholas of Cusa orders Jews of Holland to wear a badge