Hulagu Khan, also known as Hülegü or Hulegu (Mongolian:Хүлэгу хаан; Chagatai: ہلاکو; Persian:هولاکو خان; Chinese:旭烈兀; c. 1218 – 8 February 1265), was a Mongol ruler who conquered much of Western Asia. Son of Tolui and the Keraite princess Sorghaghtani Beki, he was a grandson of Genghis Khan and brother of Ariq Böke, Möngke Khan, and Kublai Khan.