26 June – Saint Pelagius of Córdoba

Abd al-Rahman III et le martyre de saint Pélage de Cordoue (France, Amiens. Bibliothèques d’Amiens Métropole, Ms. 108 f. 228)
Cathedral of Córdoba
S. Pelage, martyr (St. Pelagius, Martyr), June 26th, 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
Annus Dierum Sanctorum
Cum esset Iunior, nihil tamen puerile gessit.
When he was younger, yet did he no childish thing.
>Tobias 1.4
Te ipsum Castum Custodi.
Keep thyself chaste.
1 Timothy 5.22
The Book of Saints

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Roman Martyrology

Lives of the Saints by Sabine Baring-Gould.

Pictorial Half Hours with the Saints by Auguste François Lecanu.

Roses of Martyrdom by C. M. Cresswell (pdf page 39).

Medieval Hagiography

BHL, Supplement

Acta Sanctorum

The Life of Saint Pelagius of Cordoba translated into English is not available in open access.

Poem by Hrotsvitha (Latin with French translation)

Art & Architecture

Index of Medieval Art

Wikimedia Commons

Warburg Institute Iconographic Database 

Guide to Christian Iconography: Images, Symbols, and Texts 

Painting of Martyrdom in the Capilla del Sagrado Corazón (Catedra de Málaga)

Monasterio de San Pelayo de Antealtares

Post-Biblical Saints Art Index
Saints and their Images

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.

26 June – Saint John and Saint Paul

Ambo of Santi Giovanni e Paolo
Martyre de saint Jean et saint Paul – tableau – pendant – partie d’un ensemble de peintures – ensemble dispersé, also
Compositions artistiques (about)
Libro del Compendio della vita dei santi
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.

Victories of the Martyrs by Saint Alphonsus Liguori.

Character Calendar 

Pictorial Lives of the Saints 

La vie des saints 

La vie des saints

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

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 Golden Legend (and illustrations)

Breviarium Romanum – Latin & English.

Art & Architecture

Index of Medieval Art – John of Rome, Paul of Rome

Portail Biblissima

BeWeB

Wikimedia Commons

Warburg Institute Iconographic Database 

Medieval Religion Listserv – 2016 Dillon.

The Church of Santi Giovanni e Paolo in Rome 

martirio dei Santi Paolo e Giovanni & elemosina dei Santi Giovanni e Paolo

Santi Giovanni e Paolo, Venice

Chiesa dei Santi Giovanni e Paolo (Ravenna)

Martyrdom in Santo Stefano Rotondo in Rome

Saints and their Attributes

Sacred and Legendary Art volume II by Mrs. Jameson.

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

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

Music

Medieval Music Database

Cantus: A Database for Latin Ecclesiastical Chant

25 June – Saint William of Montevergine

Urso, Lastra sepolcrale di S. Guglielmo proveniente dal Goleto (about)
Compositions artistiques (about)
The ecstasy of Saint William of Vercelli. Engraving by Giuseppe Magliar after F. Solimena
The Book of Saints

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Roman Martyrology

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 

La vie des saints

Tradition in Action

Medieval Hagiography

BHL, Supplement

Acta Sanctorum

Breviarium Romanum – Latin & English.

Art & Architecture

Catalogo generale dei beni culturali

BeWeB

Wikimedia Commons

Vatican Founder Statue

Santuario di Montevergine, Madonna di San Guglielmo, official website

“Between the images and the text of the De vita et obitu sancti Gulielmi: A portrait of William of Vercelli, founder of Montevergine”

Saints and their Attributes

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.