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

Ifriqiya

In medieval history, Ifriqiya or Ifriqiyah was the area comprising the coastal regions of what are today western Libya, Tunisia, and eastern Algeria. This area included what had been the Roman province of Africa, whose name it inherited....

 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

Algiers

' is the capital and largest city of Algeria. According to the 1998 census, the population of the city proper was 1,519,570 and that of the urban agglomeration was 2,135,630. In 2009, the population was about 3,500,000...

, until this fell also this time to the Almohad dynasty, or Moors

Moors

The description Moors has referred to several historic and modern populations of the Maghreb region who are predominately of Berber and Arab descent. They came to conquer and rule the Iberian Peninsula for nearly 800 years. At that time they were Muslim, although earlier the people had followed...

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Abdul-Hasan lived in Marrakech

Marrakech

Marrakech or Marrakesh , known as the "Ochre city", is the most important former imperial city in Morocco's history...

 until his death, even gaining some power of governance over al-Mahdiya

Mahdia

Mahdia is a provincial centre north of Sfax. It is important for the associated fish-processing industry, as well as weaving. It is the capital of Mahdia Governorate.- History :...

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