Olympias (daughter of Robert Guiscard)

Start of a copy of the chrysobull by which Michael VII agreed to the marriage of Olympias to his son Constantine, August 1074. This copy is found in a 15th-century codex of Psellos' works.

Helena, born Olympias, was a daughter of the Norman duke of Apulia, Robert Guiscard, and the Lombard noblewoman Sikelgaita. From 1074 until 1078, she was the fiancée of the Byzantine co-emperor Constantine Doukas.