26 December – Saint Dionysius

Zwei Engel führen die Seele von Papst Dionysius in den Himmel
Saints and their Attributes

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Roman Martyrology

Lives of the Saints by Alban Butler.

Lives of the Saints by Sabine Baring-Gould.

Medieval Hagiography

BHL

The Cult of Saints in Late Antiquity Database

Liber pontificalis

Writings

Documenta Catholica Omnia

Art & Architecture

Index of Medieval Art

Catalogo generale dei beni culturali

BeWeB

Portail Biblissima

Europeana

Pope Marcus and Martyrdom of St. Dionysius

The Virgin and Child with Saint John the Baptist, Pope Saint Dionysius, Filippo Neri and a Male Saint

Sistine Chapel, South Wall

in situ
Die Sixtinische Kapelle
Saints and their Attributes
Saints and their Emblems

18 December – Saint Winibald

Pontifikale Gundekarianum – Diözesanarchiv Eichstätt, B 4 (about)
On Saint Walburga’s Family Tree (about)
Détail du relief au sommet du couvercle : sainte Walburge entourée de ses parents, le roi Richard d’Essex et sa femme et de ses deux frères, saint Willibald et saint Wunibald.
Bavaria Sancta, Augsburg, Staats- und Stadtbibliothek — 2 Th L 65
The Book of Saints

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

A Menology of England and Wales

Lives of the Saints by Alban Butler.

Lives and Legends of English Saints by L.M. Shortt.

Medieval Hagiography

BHL, Supplementum

Art & Architecture

Index of Medieval Art

Europeana

Warburg Institute Iconographic Database

Post-Biblical Saints Art Index

4904 – Might be Saint Willibald, patron of the cathedral.

Saints and their Emblems

Music

Cantus: A Database for Latin Ecclesiastical Chant