Rhystyd
Rhystyd was a late 6th-century British saint reputed to be a grandson of Hywel the Great and brother to Saint Cristiolus and Saint Silin. The village of Llanrhystud is named for the parish church which is dedicated to him.
Name
Rhystyd is thought to represent the Latin Restitutus, a common ecclesicatical name borne by the earliest known Bishop of London who attended the Council of Arles in 314. The name also appears as Rhystud. He is sometimes confused with a Saint Rhystyd Hên who was Bishop of Caerleon-on-Usk.Veneration
His feast is said to have been celebrated on the "Thursday in the Ember Week before Christmas" in the form of a fair. The Ember Week before Christmas traditionally takes place in the 51st week of the year.An apocryphal poem by the celebrated 14th century Welsh bard Dafydd ap Gwilym associates Rhystyd with Saint Dwynwen, the Welsh patron saint of lovers:
A stained-glass window depicting Rhystyd dating to 1965 is located on the eastern wall of the south aisle of St Rhystyd's Church, in Llanrhystud.