Welsh abbot of the 6th century.
Caldey island was first called Llan Illtud after its founder Illtud, but later it was called Ynys Pyr. What little we know of Pyr indicates that he was an unsuitable abbot and is one of those Celtic ‘saints’ who would never have been canonized by any formal process. Pyr got so drunk one night that on his way back to his cell he fell into a well and was dead when he was pulled out. Samson was elected abbot in his place but found that the young monks had become ungovernable because Pyr's rule was so lax; he accordingly resigned the abbacy in disgust.
T. Taylor, Life of St Samson of Dol (1925); Baring-Gould and Fisher, iv. 89–90.