Alexius V. (Ducas), murders Alexius IV., [285];
defends Constantinople, [287];
slain, [293]
Alexius Comnenus, emperor of Trebizond, [298]
Alp Arslan, Sultan of the Seljouk Turks, attacks the empire, [252];
defeats Romanus IV., [254]
Amalasuntha, Gothic queen, murdered, [82]
Amalphi, commerce of, [225]
Amorium, stormed by the Saracens, [210]