944 circa -- The Refounding of al-Jazāʾir

600s ? -- Latest records of Roman Icosium in Antiquity

675 by -- Conquest of Roman North Africa by the Arabs,

944 circa -- refounding of the city of Algiers by Arabized Berber Buluggin ibn Ziri, often transliterated Bologhine, in full Abu'l-Futuh Sayf al-Dawla Buluggin ibn Ziri ibn Manad al-Sanhaji (Arabic: أبو الفتوح سيف الدولة بلكين بن زيري بن مناد الصنهاجي‎;) He was the founder of the Zirid dynasty in Al-Ifriqiya (the Kingdom of Africa, a Berber tribute state of the Arab Caliphate state in Egypt)  

The city's name of Algiers is derived via French and Catalan Alger from the Arabic name al-Jazāʾir (الجزائر), "The Islands". This name refers to the four former islands which lay off the city's coast before becoming part of the mainland. Al-Jazāʾir is itself a truncated form of the city's older name Jazaʾir Banī Mazghanna (جزائر بني مزغانة), "The Islands of the Banu Mazghanna,Sons of Mazghana", a name used by medieval geographers such as al-Idrisi and Yaqut al-Hamawi.