Abū al-Jaysh Isḥāq

Abū al-Jaysh Isḥāq was a ruler of the Ziyādid dynasty, which governed Yemen from 819 to 1018 CE. The Ziyādids were established by Muḥammad ibn Ziyād, who gained control of the Yemeni coast with support from a Khorāsānian army. While the capital was Zabīd, the interior city of Sanaa remained under different control. Abū al-Jaysh Isḥāq is noted for restoring Ziyādid power and territory during his reign from 904 to 981 CE, following periods of territorial loss to other dynasties and groups like the Qarmaṭians. The Ziyādid dynasty eventually fell to its Ethiopian slave-viziers, with the last ruler being murdered in 1018, leading to the rise of the Najāḥid dynasty.12