abstract:Baibars or Baybars (, al-Malik al-Zahir Rukn al-Din Baibars al-Bunduqdari), nicknamed Abu l-FutuhBaibars was nicknamed Abu l-Futuh and Abu l-Futuhat which means Father of Conquests, pointing to his victories (Arabic: أبو الفتوح) (1223 – 1 July 1277, Damascus), was the fourth Sultan of Egypt from the Mamluk Bahri dynasty. He was one of the commanders of the Egyptian forces that inflicted a devastating defeat on the Seventh Crusade of King Louis IX of France.