Abū Yūsuf Yaʿḳūb b. Yūsuf b. ʿ Abd al-Muʾmin al-Manṣūr
, third ruler of the Muʾminid [q.v.] (Almohad) dynasty reigned 580-95/1184-99. On the death of Abū Yaʿḳūb Yūsuf before Santarem on 18 Rabīʿ II 580/29 July 1184, Abū Yūsuf Yaʿḳūb, bringing back the body of his father, reached Seville, where he was proclaimed on 1 Ḏj̲umādā I/10 August. He hastened to Marrākus̲h̲, took the title of amīr al-muʾminīn, issued several severe financial edicts and demanded from his subjects the strictest orthodoxy. He attempted for some time to administer justice himself atpublic au…