Constantius married Saint Helena ('Of The Cross') (Flavia Iulia Helena) in 264. Saint was born in 248-249 in Drepanum (Helenopolis), Roman Province Of Bithynia; died in 328-329 in Nicomedia, Roman Province Of Bithynia; was buried in Mausoleum Near Ss. Marcellino E Pietro At The Via Labicana, Rome, Italy. [Group Sheet] [Family Chart]