Princess, wife of Magnus Clemens Maximus, emperor in Britain, Gaul, and Spain 383–8,
when he died trying to obtain Roman recognition. Apparently she accompanied her husband, staying some time at Trier before his death in Aquileia. Welsh tradition attributes to her the making of roads (Sarn Elen or Fford Elen) and leading a military expedition into North Wales. She was reputed to have five children, one of whom was called Constantine. She may be the patroness of some Welsh churches dedicated to Helen, and of Llanelen in West Gower. Feast: 22 May or 25 August. See Helen.
Baring-Gould and Fisher, iii. 255–60; B.T.A., iii. 346.