Saint Elen
Saint Elen, often anglicized as Helen, was a late 4th-century founder of churches in Wales. Although never formally canonized by Rome, Elen is traditionally considered a saint in the Welsh Church; in English she is sometimes known as Saint Helen of Caernarfon to distinguish her from Saint Helena.
Church tradition
Traditionally, she is said to have been a daughter of the Romano-British ruler Octavius / Eudaf Hen and the wife of Magnus Maximus / Macsen Wledig, the 4th-century emperor in Britain, Gaul, and Spain who was killed in battle in 388.Elen was mother of five, including a boy named Custennin or Cystennin. She lived about sixty years later than Helena of Constantinople, the mother of Constantine the Great, with whom she has often been confused. She is patron of Llanelan in West Gower and of the church at Penisa'r-waun near Caernarfon, where her feast day is 22 May. Together with her sons, Cystennin and Peblig, she is said to have introduced into Wales the Celtic form of monasticism from Gaul. Saint Gregory of Tours and Sulpicius Severus record that Maximus and his wife met Saint Martin of Tours while they were in Gaul.