Modern Hagiography
Roman Martyrology – Saint Marcian
Wikipedia – Saint Mamertinus, Saint Marianus
Medieval Hagiography
BHL – Saint Mamertinus, Supplement ; Saint Marianus
Acta Sanctorum (combined with Saint Marianus)
The Golden Legend (and illustrations) (Saint Mamertinus)
Art & Architecture
Index of Medieval Art – Saint Mamertinus
Portail Biblissima – Mamertin & Marien d’Auxerre
POP : la plateforme ouverte du patrimoine – Mamertin, Marien
Warburg Institute Iconographic Database – Saint Mamertinus
Nihil sub sole novum 