Gwynno

Archives at the Vatican record that his festival is 26 October; that he is regarded as a confessor; and that there is said to be a sacred well, Ffynnon Wyno, associated with Llanwonno, in Glamorganshire.

Instead of returning to Pembrokeshire, they travelled east to Glamorgan to settle at Llantwit Major (Llanilltud Fawr in Welsh).

It appears that Saint Illtud's monks were accompanied to Glamorgan by several of his disciples and associates, some of whom were Bretons, among them Gwynno.

[3] The Celtic bishop, Saint Dyfrig, founded three centres of learning in South East Wales - at Llancarfan (near Cowbridge), Caerworgorn (now Llantwit Major), and Caerleon.

[2] Llanwnog in the county of Montgomeryshire claims him for its founder under the name of Gwynnog; and in the chancel window of this church he is delineated in painted glass in episcopal habits, with a mitre on his head, and a crosier in his hand; underneath is an inscription in old English characters, "Sanctus Gwinocus, cujus animae propitietur Deus.