Sulien was an 11th-century

Bishop of St David's The Bishop of St Davids is the ordinary of the Church in Wales Diocese of St Davids. The succession of bishops stretches back to Saint David who in the 6th century established his seat in what is today the city of St Davids in Pembrokeshire, ...

, for two periods (1073-1078 and 1079/80-1085/6). He died about 1090/1. Sulien is closely associated with the '' clas'' church at Llanbadarn Fawr near

Aberystwyth Aberystwyth () is a university and seaside town as well as a community in Ceredigion, Wales. Located in the historic county of Cardiganshire, means "the mouth of the Ystwyth". Aberystwyth University has been a major educational location i ...

where it appears that he took refuge when St David's was at times exposed to

Viking Vikings ; non, víkingr is the modern name given to seafaring people originally from Scandinavia (present-day Denmark, Norway and Sweden), who from the late 8th to the late 11th centuries raided, pirated, traded and se ...

incursions. Llanbadarn enjoyed a reputation for scholarship. One of his sons, Rhigyfarch was the author of a 'Life of

Saint David Saint David ( cy, Dewi Sant; la, Davidus; ) was a Welsh bishop of Mynyw (now St Davids) during the 6th century. He is the patron saint of Wales. David was a native of Wales, and tradition has preserved a relatively large amount of detail a ...

References

*Evans, D. Simon (1959). ''Buched Dewi''. *Williams (ab Ithel), John, ed. (1860), ''Annales Cambriae (444 – 1288)'', London: Longman, Green, Longman, and Roberts 1090s deaths Bishops of St Davids People from Ceredigion Welsh scholars and academics 11th-century English Roman Catholic bishops Year of birth unknown {{bishop-stub