19 December – Saint Nemesion

Martirio dei compagni di San Nemesio in Santa Francesca Romana
Compositions artistiques (about)
S. Nemèse, martyr (St. Nemesius, Martyr), December 19th, 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
The Book of Saints

Modern Hagiography

Bibliotheca Sanctorum

Roman Martyrology

Lives of the Saints by Alban Butler.

Lives of the Saints by Sabine Baring-Gould.

Character Calendar 

Pictorial Lives of the Saints 

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.

La vie des saints

Contemporary Hagiography

Eusebius’s Ecclesiastical History.

The Cult of Saints in Late Antiquity Database

Art & Architecture

Saint Nemesius and Saint John the Baptist (but a beheaded Saint Nemesius, perhaps another saint)

Saints and their Emblems

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.