Olympias (daughter of Robert Guiscard)
Daughter of Norman duke of Apulia / From Wikipedia, the free encyclopedia
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.