Ata-Malik Juvayni
Ibn al-Fuwati was born on 25 June 1244 in Baghdad. His family originated in Marw al-Rudh in Khurasan. His "nisba" indicates that one of his parents was a seller of waist wraps (Arabic: "fūṭa", plural: "fowaṭ"). Aged 14, he was enslaved and incarcerated by the Mongols at the Siege of Baghdad (1258) and was subsequently brought to Adharbayjan. In 1261/2, he joined Nasir al-Din al-Tusi in Maragheh, and was appointed librarian of the Maragheh observatory by Tusi. While in Maragheh, Ibn al-Fuwati wrote a biographical dictionary of astronomers, the "Taḏkerat man qaṣada’l-raṣad" (non-extant). He stayed in Maragheh together with Tusi's son and successor Asil al-Din. In 1281, Ibn al-Fuwati returned to Baghdad on the request of Ata-Malik Juvayni and was appointed director of the Mustansiriya School.