18 March – Saint Fridianus

San Frediano
San Frediano devia il corso del Serchio from the Barbadori Altarpiece
Compositions artistiques (about)
The Book of Saints

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Roman Martyrology & translation on 18 November

Lives of the Saints by Alban Butler.

Lives of the Saints by Sabine Baring-Gould.

Medieval Hagiography

BHL (18 November), Supplementum

The Cult of Saints in Late Antiquity Database

Art & Architecture

Index of Medieval Art

Catalogo generale dei beni culturali

BeWeB

Wikimedia Commons

Basilica of San Frediano

Post- Biblical Saints Art Index
Saints and their Emblems

Caractéristiques des saints dans l’art populaire by Charles Cahier – barque, rocher.