Alboin the Lombard invades and conquers Italy, [116]

Aleppo, Emirate of, [227];

attacked by Nicephorus Phocas, [231];

tributary to the empire, [270]

Alexander, emperor-regent, [217]

Alexandria, stormed by the Arabs, [166]

Alexius I. (Comnenus), usurpation of, [257];

wars with the Normans, [259];

conquests of in Asia Minor, [205];