or Ruḍwān b. Tutus̲h̲ b. Alp Arslan, Fak̲h̲r al-Mulk (d. 507/1113), Sald̲j̲ūḳ prince in Aleppo after the death of his father Tutus̲h̲ [q.v.] in Ṣafar 488/February 1095.

After assuming power in Aleppo, Riḍwān and his stepfather, the Atabeg D̲j̲anāḥ al-Dawla Ḥusayn, aimed at taking over Tutus̲h̲’s former capital Damascus and thus at controlling the whole of Syria and Palestine not still in Fāṭimid hands. However, Riḍwān’s brother Duḳāḳ and his Atabeg Ṭug̲h̲tigin held on to Damascus, and after Riḍwān broke with D̲j̲anāḥ al-D…