Fagan (saint)

Saint Fagan
St Fagan's Church in Trecynon
Bishop & Confessor
Died	c. 2nd century
Canonized	Pre-Congregation
Feast	Usually unobserved
Patronage	Trecynon St Fagans (lapsed) Llanmaes (lapsed)

Fagan (Latin: Faganus; Welsh: Ffagan), also known by other names including Fugatius, was a legendary 2nd-century Welsh bishop and saint, said to have been sent by the pope to answer King Lucius's request for baptism and conversion to Christianity. Together with his companion St Deruvian, he was sometimes reckoned as the apostle of Britain.

King Lucius's letter (in most accounts, to Pope Eleutherius) may represent earlier traditions but does not appear in surviving sources before the 6th century; the names of the bishops sent to him does not appear in sources older than the early 12th century, when their story was used to support the independence of the bishops of St Davids in Wales and the antiquity of the abbey at Glastonbury in England. The story became widely known following its appearance in Geoffrey of Monmouth's pseudohistorical History of the Kings of Britain. This was influential for centuries and its account of SS Fagan and Deruvian were used during the English Reformation to support the claims of both the Catholics and Protestants. Geoffrey's account is now considered wholly implausible, but Christianity was well-established in Roman Britain by the third century. Some scholars therefore argue the stories preserve a more modest account of the conversion of a Romano-British chieftain, possibly by Roman emissaries by these names.

Fagan is the patron saint of a number of churches, and gives his name to the village St Fagans near Cardiff, now the home of a Welsh National History Museum. His feast day does not appear in any medieval Welsh calendar of the saints and is not observed by the Anglican, Catholic, or Orthodox churches in Wales.