1 May – Saint Hildebrand of Fossombrone

Affreschi nella Chiesa di S. Aldebrando a Fossombrone, rappresentanti i miracoli del Santo e l’Epifania 
Ambito marchigiano sec. XVIII, Sant’Aldebrando

Medieval Hagiography

BHL, Supplementum

Acta Sanctorum

Art & Architecture

BeWeB

Post-Biblical Saints Art Index

2661 – Chiesa di Sant’Aldebrando, black and white photographs at Alamy

Caractéristiques des saints dans l’art populaire by Charles Cahier – oiseaux, tour.

1 May – Saint Augustin Schoeffler and Saint Jean-Louis Bonnard

The Martyrdom of Augustin Schœffler, also known as Saint Augustinô Schoeffler Đông, on May 1, 1851 in Sơn Tây
The martyrdom of Jean-Louis Bonnard, also known as Saint Bonnard Hương, on May 1, 1852 in Nam Định

Modern Hagiography

The Holiness of the Church in the Nineteenth Century: Saintly Men and Women of Our Own Times

The New Glories of the Catholic Church – Saint Augustin Schoeffler & Saint Jean-Louis Bonnard

Art & Architecture

Wikimedia Commons – Saint Augustin Schoeffler & Saint Jean-Louis Bonnard