10 October – Saint Cerbonius

Arca di Cerbone
Central Portal of Massa Marittima
Manetti R. (1630), Messa di San Cerbone
Libro Compendio della vita di tutti i santi
The Book of Saints

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Roman Martyrology

Lives of the Saints by Sabine Baring-Gould.

Medieval Hagiography

BHL

Acta Sanctorum

The Cult of Saints in Late Antiquity Database

Gregory the Great’s Dialogues

Art & Architecture

Index of Medieval Art

Catalogo generale dei beni culturali

BeWeB

Portail Biblissima

Warburg Institute Iconographic Database – Arca di Cerbone

Medieval Religion Listserv

Hermitage on the Island of Elba

Chapel in Baratti

Massa Marittima Cathedral

Saints and their Attributes
Saints and their Emblems

9 October – Saint Gunther of Bohemia

Gravestone
Bavaria Sancta, Augsburg, Staats- und Stadtbibliothek — 2 Th L 65
Bavaria Sancta, Augsburg, Staats- und Stadtbibliothek — 2 Th L 65 (see also) – a bishop named Gunther in the list of Regensburg bishops

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Medieval Hagiography

BHL, Supplementum

Acta Sanctorum

Art & Architecture

Richnach Priory

6 October – Saint Artaldus

Francisco de Zurbarán
Sant’Artaldo vescovo di Belly

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Medieval Hagiography

BHL, Supplementum

Acta Sanctorum

Art & Architecture

Wikimedia Commons tags two paintings of other Carthusian bishops of Belley as Saint Artaldus. The Prado identifies them, presumably, correctly.

Post-Biblical Saints Art Index