29 May – Blessed William Arnaud and Companions, Martyrs of Avignonet

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Short Lives of the Dominican Saints

Medieval Hagiography

Acta Sanctorum

Art & Architecture

“Patrimoine. Avignonet-Lauragais : l’église Notre Dame des Miracles et le massacre des inquisiteurs” (archived)

28 May – Blessed Lanfranc of Canterbury

Annus Dierum Sanctorum
Date eleemosinam.
Eleemosinas illius ennarrabit omnis Ecclesia.
 All the church shall declare his alms.
Ecclesiaticus 31.11

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Sanctorale Catholicum (3 July)

A Menology of England and Wales (24 May)

Medieval Hagiography

BHL, Supplementum (28 May)

Acta Sanctorum (28 May)

Art & Architecture

Portail Biblissima

Europeana

Warburg Institute Iconographic Database

15C Manuscript Illumination

Post-Biblical Saints Art Index
Saints and their Attributes

Caractéristiques des saints dans l’art populaire by Charles Cahier – monstrance, demon.

28 May – Blessed Maria Bartolomea Bagnesi

Painting of Funeral

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Dictionary of Saintly Women

Short Lives of the Dominican Saints

Art & Architecture

Chapel in the Chiesa di Santa Maria Maddalena dei Pazzi in Florence (number 6) – Painting of Funeral

BeWeB, especially the series by Piatoli