Modern Hagiography
Bibliotheca Sanctorum (both)
Martyrologium Romanum (both)
Roman Martyrology (Vienne)
Lives of the Saints by Alban Butler. (Vienne)
Lives of the Saints by Sabine Baring-Gould. (Vienne)
Medieval Hagiography
BHL – Saint Ferreolus of Vienne & Saint Ferreolus of Limoges
Acta Sanctorum – Saint Ferreolus of Vienne, translation & Saint Ferreolus of Limoges, translation
The Cult of Saints in Late Antiquity Database (Vienne)
Art & Architecture
Index of Medieval Art – Saint Ferreolus of Limoges
Portail Biblissima – Saint Ferreolous of Vienne, although this is uncertain
POP : la plateforme ouverte du patrimoine (requires filtering)
Caractéristiques des saints dans l’art populaire by Charles Cahier – Limoges: oie; Vienne: armure, chaînes.
The Saints in Art by Joseph Maria von Radowitz.
Emblems of Saints by Which They Are Distinguished in Works of Art by F. C. Husenbeth.
