She was born at
Constantinople on July 7, 611,
baptized on August 15, and crowned
Augusta (in the oratory of St. Stephen in the palace) on October 4 of the same year. When she was about 15 years old, her father allied with the
Western Göktürks and the
Khazars against the
Sassanian Persians and the
Eurasian Avars. To secure the assistance of the Turks, Eudoxia was promised in marriage to either the Turkic ruler Ziebel (probably
Tong Yabghu) or his son. She was afterwards sent to her Turkic husband, but the news of his death stopped her journey, and prevented the consummation of the marriage. She died before 4 January 639, since she is not named in the
de ceremoniis of that day. ==Notes==