Ibn ʿAsākir said: Leadership of the Shāfiʿī school ultimately passed to him. He engaged in public preaching, though he was not particularly gifted in it. His father’s name was Ramaḍān, a man from Marāgha, and Yūsuf was born to him in Damascus.
He further relates that Yūsuf traveled abroad, studied law under Asʿad al-Mihanī, served as his teaching assistant, excelled at debate, and was firm in creed.

329 – Shāwar, Abū Shujāʿ Shāwar ibn Mujīr al-Saʿdī *
Vizier of the Egyptian domains, the amir Abū Shujāʿ Shāwar ibn Mujīr al-Saʿdī (1), of the Hawāzin tribe.
Ṣāliḥ ibn Ruzzīk had appointed him over Upper Egypt.
He was resolute, courageous, a skilled horseman, and an able administrator.
When Ṣāliḥ was killed, Shāwar rose in revolt, mustered men and gathered forces. Advancing through the oases and cutting across the desert until he emerged near Tarūjah (2), he made for Cairo, entered it, slew al-ʿĀdil Ruzzīk ibn al-Ṣāliḥ, and seized sole authority. His position then became unstable, so he went to Nūr al-Dīn, ruler of Syria, who reinforced him with Asad al-Dīn ibn Shīrkūh (3) and confirmed him in his post,