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 The battle of Valtierra was fought between forces from Navarre–Aragon and Zaragoza on 24 January 1110 (1 Rajab 503 AH). The Navarrese defenders were victorious and the king of Zaragaoza, al-Musta'in II, was killed. Late in 1109, al-Musta'in had ...

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