St. Illtud (also spelled
Illtyd,
Eltut, and, in
Latin,
Hildutus), also known as
Illtud Farchog "Illtud the Knight", is venerated as the founder-
abbot and teacher of the divinity school known as
Cor Tewdws, located in
Llanilltud Fawr (Llantwit Major) in the
Welsh county of
Glamorgan. He founded the monastery and college in the 6th century, and the school is believed to be Britain’s earliest centre of learning. At its height, it had over 1000 pupils and schooled many of the great saints of the age, including
Saint Patrick of Ireland,
Saint David of Wales,
Gildas the Historian, and
Samson of Dol.