12 April – Saint Alferius of Cava

Sant’Alferio by Tino Di Camaino (about)
Ambito tedesco sec. XVII-XVIII, S. Alferio in preghiera
Annus Dierum Sanctorum
Manducaverunt et saturati sunt.
They did eat and were filled.
Mark 8.8
Die coe?nae meae veni ad me.
Benedicam et multiplicabo.
The Book of Saints

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Medieval Hagiography

BHL

Acta Sanctorum

Art & Architecture

Index of Medieval Art

Catalogo generale dei beni culturali

BeWeB

Europeana

Warburg Institute Iconographic Database

La Trinità della Cava (official website)

Caractéristiques des saints dans l’art populaire by Charles Cahier – construction, oeuf, pain.

12 April – Saint Julius I

Saint Jules I et messager d’Athanase (France, Paris. Bibliothèque nationale de France, Département des manuscrits, Français 2810 f.178)
By Giuseppe Franchi in the Bibliotheca Ambrosiana
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

Pictorial Lives of the Saints 

La vie des saints

Tradition in Action

Medieval Hagiography

BHL

Acta Sanctorum

The Cult of Saints in Late Antiquity Database

Liber pontificalis

Writings of Pope Julius

Documenta Catholica Omnia

His correspondence (not in the public domain)

Art & Architecture

Index of Medieval Art

Portail Biblissima

Panel showing consecration of Saint Donatus, lower register, second from left) – Betto di Francesco – Giovanni di Francesco (1364-1375), Arca di San Donato, about

Saints and their Emblems