Sanctorale – Page 108 – Nihil sub sole novum

20 April – Blessed William of Windbert

Medieval Hagiography Acta Sanctorum Art & Architecture Kloster Windberg

20 April – Blessed Richard Sergeant & Blessed William Thomson

Modern Hagiography A Menology of England and Wales Memoirs of Missionary Priests

18 April – Saint Galdinus of Milan

Modern Hagiography Roman Martyrology Lives of the Saints by Sabine Baring-Gould. Tradition in Action Medieval Hagiography BHL, Supplementum Acta Sanctorum Art & Architecture Catalogo generale dei beni culturali BeWeB Medieval Religion Listserv Wikimedia Commons (tomb in the Duomo of Milan)