Abul-Hasan al-Hasan ibn Ali

Abul-Hasan al-Hasan ibn Ali (alternatly known as "Al-Hassan ibn Ziri") (1109–1171) was the last ruler of the Zirid dynasty in Ifriqiya 1121–1152. He succeeded Ali ibn Yahya.

Under his reign, piracy became an important source of income, although in turn this destabilised the relationships to the Christian maritime cultures.

In order to secure trade in the Mediterranean he was forced to accept dependence on the Norman-controlled Sicily. Between 1146 and 1148 the Zirid realm fell,and Abul-Hasan lost all regions except for Algiers, until this fell also this time to the Almohad dynasty, or Moors.

Abdul-Hasan lived in Marrakech until his death, even gaining some power of governance over al-Mahdiya.

References

• Giosuè Musca, Il mezzogiorno normanno-svevo e le crociate, Centro di studi normanno-svevi, Università di Bari (on p. 106).