« REX GLORIOSE MARTYRUM. — Hymn of Lauds in the Common of several martyrs outside the Easter season; by an unknown author, belonging to the ancient Irish group. Those who exalt therein the martyrs’ victory in turn ask them for forgiveness of their own sins.
BIBL.: U. Chevalier, Poésie liturgique. Rythme et histoire, Parigi 1893, p. 118; C. Albin, La poésie du Bréviaire, Lione s. a., pp. 412–14; V. Terreno, Gli inni dell’Ufficio divino, Mondovì 1932, p. 316.