Issac I., Comnenus, Emperor of the East from 1057 to 1059; raised to the throne by the army; ruled well, but falling ill and fearing he had not long to live. He retired and spent his two remaining years in a monastery; he was a student and annotator of Homer.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Isaac * Issac II., Angelus