23 October – Saint Severin of Cologne & Saint Severin of Bordeaux

Vision de saint Séverin (France, Paris. Bibliothèque nationale de France, Département des manuscrits, Latin 11751 f.141)
Darstellung des Grabes des Severinus (Bordeaux)

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum (of Cologne)

Roman Martyrology

Lives of the Saints by Alban Butler.

Medieval Hagiography

BHL, Supplement

Acta Sanctorum

The Cult of Saints in Late Antiquity Database – Saint Severinus of Bordeaux & Saint Severinus of Cologne

Art & Architecture

Index of Medieval Art (Saint Severinus of Cologne)

Portail Biblissima (identified as Saint Severinus of Cologne), also, also

Europeana

Wikimedia Commons – Saint Severinus of Cologne

Wooden Shrine (Saint Severinus of Cologne)

Basilique Saint-Seurin de Bordeaux, Alabaster Altar (see also), POP : la plateforme ouverte du patrimoine

Basilica of Saint Severin in Cologne, Severinusschrein

Saints and their Attributes
Saints and their Emblems

Lives and Legends of the Great Hermits and Fathers of the Church, with Other Contemporary Saints by Mrs. Arthur Bell.

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.

Music

Cantus: A Database for Latin Ecclesiastical Chant (Saint Severinus of Cologne)