(330-398 A.D.) The only sister of St. Ambrose of Milan. She was older than St. Ambrose, and was born most probably at Trier, where her father resided as "Praefectus Praetorio Galliarum". Mentioned to have led a Gnostic sect founded by Heracleon. http://www.catholic-forum.com/Saints/saintm2l.htm