Abu Ja'far Ahmad ibn Yusuf ibn Hud (), known by the

regnal name A regnal name, regnant name, or reign name is the name used by monarchs and popes during their reigns and subsequently, historically. Since ancient times, some monarchs have chosen to use a different name from their original name when they accede ...

al-Musta'in Billah (), was the fourth member of the

Banu Hud The Banu Hud ( ', the Hudid dynasty) were an Arab dynasty that ruled the ' of Zaragoza from 1039 until 1110. The Hudid dynasty descends from Hud ibn Abd Allah ibn Musa ibn Salem al-Judhami (d. ca. 960). In 1039, under the leadership of Al-Mus ...

family to rule the

Taifa of Zaragoza The taifa of Zaragoza () was an independent Arab Muslim state in the east of Al-Andalus (present-day Spain) with its capital in Saraqusta (Zaragoza) city. It was established in the early 11th century as one of the many Taifa kingdoms that foll ...

. He ruled from 1085 to 1110. He was the son of

Yusuf al-Mu'taman ibn Hud Abu Amir Yusuf ibn Ahmad ibn Hud (; died ), more commonly known as al-Mu'taman, was a mathematician, and also one of the kings of the Taifa of Zaragoza. The name al-Mu'taman is itself a shortening of his full regnal name al-Mu'taman Billah (). A ...

. He died in the battle of Valtierra on 24 January 1110.

References

List of Muslim rulers
Emirs of Zaragoza 11th-century monarchs in Al-Andalus 12th-century monarchs in Europe Banu Hud 11th-century Arab people {{Al-Andalus-royal-stub