Illtud, Abbot
His life and legend. Variants on the saint's name include Iltut, Illtut, and Illtud.
St. Illtud Farchog
Biography of the early 6th century founder and abbot of Llanilltud Fawr in South Wales.
St. Illtyd
Also known as Iltutus. Late fifth- to early sixth-century Welsh saint. Biographical entry in the Catholic Encyclopedia.