Emperor Leo Iv
EMPEROR LEO IV., called CHOZAR, succeeded his father, Constantine V., as emperor of the East in 775. In 776 he associated his young son, Constantine, with himself in the empire, and suppressed a rising led by his five step-brothers which broke out as a result of this proceeding. Leo was largely under the influence of his wife Irene (q.v.), and when he died in 780 he left her as the guardian of his successor, Constantine VI.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)