Ulu Arif Chalabi was born on 8 Dhu al-Qa'da 670 AH (6 June 1272) in Konya; his given name was Feridun. He was the grandson of Mevlânâ Celâleddîn-i Rûmî and the son of Sultan Veled, his mother being Fâtıma Hatun, daughter of Selâhaddîn-i Zerkûb. After his father's death he held the post of leadership and, through his travels across Anatolia and western Iran, played a major role in spreading the Mevleviyye order. He died on 24 Dhu al-Hijja 719 AH (5 February 1320) in Konya and was buried within the Mevlânâ Mausoleum. (Sources: TDV İslâm Ansiklopedisi, 'Ârif Çelebi'; semazen.net / Hz. Mevlânâ Külliyatı)