31 December – Saint Columba of Sens

Scenes from the Life of St. Columba, see also

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Roman Martyrology

Dictionary of Saintly Women

Lives of the Saints by Alban Butler.

Lives of the Saints by Francis Weninger.

Lives of the Saints by Sabine Baring-Gould.

Medieval Hagiography

BHL, Supplement

The Cult of Saints in Late Antiquity Database

Art & Architecture

Index of Medieval Art

Portail Biblissima

POP : la plateforme ouverte du patrimoine

Warburg Institute Iconographic Database

Medieval Religion Listserv – 2012 Dillon.

Vatican Colonnade

Post Biblical Saints Art Index
Saints and their Attributes
Saints and their Emblems

The Saints in Art by Joseph Maria von Radowitz.

Music

Cantus: A Database for Latin Ecclesiastical Chant

31 December – Saint Melania the Younger

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Roman Martyrology

Sanctorale Catholicum

Dictionary of Saintly Women

Lives of the Saints by Francis Weninger.

Lives of the Saints by Sabine Baring-Gould.

Great Wives and Mothers by Hugh Francis Blunt.

Tradition in Action

A longer form biography, The Life of Saint Melania

Contemporary Hagiography

The Cult of Saints in Late Antiquity Database

An account of her was written during her lifetime by Palladius in his Lausiac History. (htmlpdf)

Her life was written by Gerontius, Bishop of Milan, within two decades of her death.  It has been translated into English, but is not available open access.

Art & Architecture

Index of Medieval Art

Europeana

Saints and their Attributes
Saints and their Emblems