Ibn Yūnus refers to the father as al-Turkī and mentions another person as having assisted him in doing the astronomical observations along with his son and his slave. Ibn al-Qifṭī, though, refers to Abū al-Qāsim as al-Ḥarawī from the city of Herat; he informs us that the son Abū al-Ḥasan `Alī was raised by his father who had educated him in the sciences. Ibn al-Qifṭī considers `Alī ibn Amājūr as a separate person, and not necessarily related to Abū al-Qāsim. Both Ibn al-Nadīm and Ibn al-Qifṭī believe that the family hailed from Farghāna. [BEA, Fazlioglu]