BROTHEN and GWENDOLEN (Saints) (October 18) (6th century) Of these Welsh Saints we know little beyond their names and the fact of their existence, coupled with that of the cultus locally given to them after their deaths. Saint Brothen is Patron Saint of Llanbrothen in Merionethshire. According to the Welsh genealogies, he had a brother, Saint Gwynnin. The two churches of Llangwynnin and Dwygyfylchi, both in Carnarvonshire, may have been called thus after him. Dolwyddelen and Llanwyddelan in Montgomeryshire suggest a Saint Gwendolen. This and similar names are diminutives of Gwen (white), and are equivalent to our Blanche and its allied forms.