1 January – Saint Telemachus

La visión del Coloseo. El último mártir
Print of Saint Almachio by Teresa del Po
Annus Dierum Sanctorum
Hodie Octava est Natalis Domini cessate a superstitionibus idolorum.
Today is the octave of the day of the Lord: desist from the superstitions of idols!
Roman Martyrology.
The Book of Saints

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Roman Martyrology

Sanctorale Catholicum

Lives of the Saints by Sabine Baring-Gould.

Evenings with the Saints

Deeds of Faith by John Mason Neale.

Medieval Hagiography

Acta Sanctorum

The Cult of Saints in Late Antiquity Database – Martyrologium Hieronymianum & Bede’s Martyrology

Theodoret’s Ecclesiastical History (pdf page 381 – html).

Art & Archaeology

Warburg Institute Iconographic Database

Post-Biblical Saints Art Index
Saints and their Emblems

1 January – Saint Fulgentius of Ruspe

Saint Jean et commentateurs (France, Paris. Bibliothèque nationale de France, Département des manuscrits, Latin 8878 f.13v)
Mans (Le) – BM – ms. 0214
Eglise de l’Assomption, Sarrance (17th C.)
The Book of Saints

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Roman Martyrology

Sanctorale Catholicum

Lives of the Saints by Alban Butler.

Lives of the Saints by Sabine Baring-Gould.

Character Calendar 

Miniature Lives of the Saints

Pictorial Lives of the Saints 

La vie des Saints 

Stories of the Saints Fourth Series Saints of the Early Church by Mary Seymour. 

Rome and the Negro:  Lives of the Noted African Bishops, Saints, Martyrs, Holy Women and Fathers of Deserts

Evenings with the Saints

Medieval Hagiography

BHL, Supplement

Acta Sanctorum

The Cult of Saints in Late Antiquity Database – The Life of Fulgentius

Writings by Saint Fulgentius

Documenta Catholica Omnia

Fulgentius of Ruspe and the Scythian Monks: Correspondence on Christology and Grace

Art & Architecture

Index of Medieval Art

Catalogo generale dei beni culturali

BeWeB

Portail Biblissima

POP : la plateforme ouverte du patrimoine

Saints and their Emblems

The Saints in Art by Joseph Maria von Radowitz.

1 January – Saint Odilo of Cluny

Chapelle des Moines, Berzé-la-Ville
19C Painting of the Funeral of Saint Odilo
S. Odilon, abbé (St. Odilo, Abbot), January 1st, from Les Images De Tous Les Saincts et Saintes de L'Année (Images of All of the Saints and Religious Events of the Year), Jacques Callot (French, Nancy 1592–1635 Nancy), Etching; second state of two (Lieure)
Les Images De Tous Les Saincts et Saintes de L’Année
The Book of Saints

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Roman Martyrology

Sanctorale Catholicum

Lives of the Saints by Alban Butler.

Lives of the Saints by Sabine Baring-Gould.

Stories of the Saints Fifth Series by Mary Seymour.

Medieval Hagiography

BHL, Supplement

Acta Sanctorum

Writings by Saint Odilo

Documenta Catholica Omnia

Art

Index of Medieval Art

Catalogo generale dei beni culturali

Portail Biblissima

POP : la plateforme ouverte du patrimoine

Europeana

Warburg Institute Iconographic Database

Saints and their Attributes
Saints and their Emblems

Lives and Legends of the English Bishops and Kings, Mediaeval Monks, and Other Later 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.