- Mariophylus Severinus
- Mariae servus Singularis
Norbertine canon of the monastery in Roggenburg, Swabia, Bavaria (in modern Germany). He was known for his deep prayer life, his personal penances, and his devotion to the Virgin Mary. Promoted pilgrimages to a shrine in nearby Sheissen. In his later years he withdrew to life as a prayerful hermit in a cell in the monastery, spending his life in prayer, spiritual communion and celebrating Mass alone.
- “Blessed Severin Ott“. CatholicSaints.Info. 7 December 2015. Web. 29 April 2017. <>