Muhammad ibn al-Hanafiyyah
Ali had four children from Muhammad's youngest daughter, Fatimah: Al-Hasan, Al-Husayn, Zaynab and Umm Kulthum. His other well-known sons were Al-Abbas ibn Ali, born to Umm al-Banin, and Muhammad ibn al-Hanafiyyah, from a freed slave girl named Khawlah bint Ja'far.