20 December – Saint Ursicinus of Saint-Ursanne

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Wikipedia Entry

Art & Architecture

Medieval Religion Listserv

Saint Ursanne, see also (Histoire de St-Ursanne, du chapitre, de la ville et de la prévôté de ce nom)

https://commons.wikimedia.org/wiki/File:Saint-Ursanne_Kirche_Suedportal.jpg

Wikimedia Commons

Medieval Hagiography

The Cult of Saints in Late Antiquity Database

BHL Novum Supplementum, p. 846 (not in the public domain)