Ousanas (fl. 320), known as Ella Allada or Ella Amida in Eritrean and Ethiopian tradition, was the ruler of the Kingdom of Aksum in the 320s AD.
Little is known about his life, but he may have invaded and imposed tribute upon Nubia, and he may have had a "relatively long reign". His reign may have been briefly interrupted by the usurper Wazeba.
Ezana (Ge'ez: ዔዛና, ‘Ezana, unvocalized ዐዘነ ‘zn), (Ancient Greek: Ἠεζάνα, Aezana) was the ruler of the Kingdom of Aksum (320s – c. 360 AD). One of the best-documented rulers of Aksum, Ezana is important as he first adopted for his country the religion of Christianity and the name of Ethiopia. Tradition states that Ezana succeeded his father Ella Amida (Ousanas) as king while still a child; his mother, Sofya, served as regent until he came of age.