14 April – Saint Fronto of Nitria

Saint Fronto Praying for Food & Camels Delivering Food
Saint Fronton (France, Paris. Bibliothèque nationale de France, Département des manuscrits, Italien 1712 f.137)
The Book of Saints

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Roman Martyrology

Lives of the Saints by Sabine Baring-Gould.

The Book of Saints and Friendly Beasts by Abbie Farwell Brown. 

Medieval Hagiography

Acta Sanctorum

The Cult of Saints in Late Antiquity Database (currently empty)

Art & Architecture

Index of Medieval Art
– Vitae Patrum, Morgan Library, MS M.626, fols. 83r–84v: Life of Fronto of Nitria

Portail Biblissima

Saints and their Attributes
Saints and their Emblems

13 April – Saint Margaret of Città di Castello

Andrea di bartolo, Caterina da Siena tra quattro beate domenicane e scene delle rispettive vite, also
18C beata Margherita da Città di Castello, also

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Dictionary of Saintly Women

Short Lives of the Dominican Saints

Medieval Hagiography

BHL Supplement

Acta Sanctorum

Art & Architecture

Catalogo generale dei beni culturali

BeWeB

Saints and their Attributes

Caractéristiques des saints dans l’art populaire by Charles Cahier – atttributs menus, cailloux.

13 April – Saint Hermenegild

Martyre de saint Herménégilde (France, Paris. Bibliothèque nationale de France, Département des manuscrits, Français 2818 f.60)
The Triumph of Saint Hermenegild by Francisco de Herrera the Younger
San Hermenegildo en la prisión by Francisco Aznar y García
Compositions artistiques (about)
Libro del Compendio della vita dei santi
Annus Dierum Sanctorum
In vinculis non dereliquit illum, – et dedit illi claritatem.
In bands she left him not, and gave him glory.
Wisdom 10.14
Trademini autem a parentibus, – et morte afficient.
And you shall be betrayed by your parents, – and some they will put to death.
Luke 21.16
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.

The Liturgical Year by Dom Guéranger.

Character Calendar

Pictorial Lives of the Saints

Our Birthday Bouquet Culled from the Shrines of the Saints and the Gardens of the Poets by Eleanor C. Donnelly.

Pictorial Half Hours with the Saints by Auguste François Lecanu.

Miniature Lives of the Saints for Every Day in the Year

The Lives of Saints, with Other Feasts of the Year, According to the Roman Calendar by Peter Ribadeneira.

La vie des saints

Tradition in Action

Hermengildo, a 19C play in Spanish

Medieval Hagiography

BHL

Acta Sanctorum

The Cult of Saints in Late Antiquity Database

Dialogues of Gregory the Great (Book 3, chapter 31; alternately)

Breviarium Romanum – Latin & English.

Art & Architecture

Portail Biblissima

POP : la plateforme ouverte du patrimoine

Warburg Institute Iconographic Database

Medieval Religion Listserv

A Guide to Christian Iconography: Images, Symbols, and Texts

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

Caractéristiques des saints dans l’art populaire by Charles Cahier –  Chrisme/couronne, hache.

A Handbook of Christian Symbols and Stories of the Saints as Illustrated in Art by Clara Erskine Clement.

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

Saints and their Symbols: A Companion in the Churches and Picture Galleries of Europe by E. A. Greene.

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

Hymns to Saint Hermengild

Customs & Devotions

Manna for the Soul: Meditations for Every Day of the Year by Paulo Segneri.