Al-Qadir Billah

Al-Qadir Billah (reigned 991-1031 CE) was an Abbasid caliph known for his efforts to restore Abbasid authority during a time of fragmentation and decline. He is recognized for his strong stance against the Fatimids and for promoting Sunni orthodoxy. His reign was characterized by attempts to re-establish the caliphate's influence and to navigate the complex political landscape of the time, including conflicts with rival dynasties.