Cristiolus was a 6th-century monk from Anglesey, Wales. According to historical tradition, he was the son of Hywel, making him a brother to several other figures, including Saint Sulien, Saint Rhystud, and Derfel Gadarn. He is primarily recognized for his religious work in Wales, where he established various churches, including a site on the island of Anglesey.
Life and work
Born around 550, Cristiolus lived during a period of early Christian development in Wales. He is credited with founding multiple religious sites, most notably a church on Anglesey. His lineage connects him to a family of significant religious and historical figures, including his brother Saint Sulien.
Veneration
The saint is honored within the Eastern Orthodox Church, where his feast day is observed on 3 November. In the Catholic tradition, he is commemorated on 3 December. Several churches in Wales bear his name, including locations in Llangristiolus and Pembrokeshire.