8 August – Saint Jean-Baptiste-Marie Vianney

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum (2 August)

Character Calendar 

Stories of Holy Lives by Mary Seymour.

The Holiness of the Church in the Nineteenth Century: Saintly Men and Women of Our Own Times by Constantine Kempf.

True Stories for First Communicants (audiobook)

Tradition in Action

Life of Saint John-Baptist Vianney, Curé d’Ars (1865).

Breviarium Romanum Latin.

Writings by Saint John Vianney

Thoughts of the Curé of Ars (John Baptist Vianney) 

The Sermons of the Curé of Ars 

Art & Architecture

Catalogo generale dei beni culturali

BeWeB

POP : la plateforme ouverte du patrimoine

Saints and their Attributes

Customs & Devotions

Jubilé à Ars : des prêtres venus du monde entier

8 August – Saint Hormizd

Modern Hagiography

Bibliotheca Sanctorum

Roman Martyrology

Lives of the Saints by Alban Butler.

Lives of the Saints by Sabine Baring-Gould.

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.

Tradition in Action

Medieval Hagiography

BHL 

Acta Sanctorum

Theodoret, Ecclesiastical History

Art & Architecture

Saints and their Attributes

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.

both reference

source

8 August – Saint Cyriacus, Saint Largus, and Saint Smaragdus

source (about)
Scene of Beheading that has been identified as the Martyrdom of Saint Cyriakus
Annus Dierum Sanctorum
Glorificavit illum in conspectu Regum.
He glorified him in the sight of kings.
Ecclesiasticus 45.3
Dedit illis potestatem Spirituum immundorum ut ejicerent eos.
He gave them power over unclean spirits, to cast them out.
Matthew 10.1
Filia mea
Male a daeonio vexatur.

My daughter is grieviously troubled by the devil.
Matthew 15.22

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Roman Martyrology8 August/16 March

Sanctorale Catholicum

Lives of the Saints by Alban Butler.

Lives of the Saints by Francis Weninger.

Lives of the Saints by Sabine Baring-Gould.

The Liturgical Year by Dom Guéranger.

Victories of the Martyrs by Saint Alphonsus Liguori.

Character Calendar 

Pictorial Lives of the Saints 

La vie des saints 

La vie des saints

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

Medieval Hagiography

BHL, Supplement 

Acta Sanctorum

The Cult of Saints in Late Antiquity Database

The Golden Legend (and illustrations)

Breviarium RomanumLatin & English.

Art & Architecture

Index of Medieval Art

Portail Biblissima

POP : la plateforme ouverte du patrimoine

Warburg Institute Iconographic Database 

St. Cyriakus (Berghausen)

Saint Cyriakus, Gernrode

Painting by Mathias Grünewald 

Post-Biblical Saints Art Index
Saints and their Attributes

Emblems of Saints by Which They Are Distinguished in Works of Art by F. C. Husenbeth.

Music

Cantus: A Database for Latin Ecclesiastical Chant