16 April – Saint Engratia & the Eighteen Martyrs of Zaragoza

Modern Hagiography

Roman Martyrology

Dictionary of Saintly Women

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.

Medieval Hagiography

BHL – Engratia & 18 Martyrs, Supplement

Acta Sanctorum – Engratia, Eighteen Martyrs including Faustus

The Cult of Saints in Late Antiquity Database

Prudentius, Liber peristephanon

Art & Architecture

Index of Medieval Art

POP : la plateforme ouverte du patrimoine

Église de Sainte-Engrâce

The Church of Saint Engracia in Lisbon, Portugal