Son of duke Burhard II of Swabia. Educated at Einsiedeln, Switzerland. Monk of Einsiedeln. Hermit on the island of Ufnau in Lake Zurich where his mother had lived in seclusion following her diagnosis with leprosy, and where he built a church dedicated to Our Lady.
- 975 of natural causes
- Book of Saints, by the Monks of Ramsgate
- Dictionary of Saints, by John Delaney
- Our Sunday Visitor’s Encyclopedia of Saints