- Ambrogio da Massa
Parish priest in Maremma region of Tuscany, Italy. After hearing the preaching of Blessed Moricus, an early companion of Saint Francis of Assisi, Ambrose was drawn to the religious life. Joined the Franciscans in 1225 and devoted himself to charity and penance.
- Book of Saints, by the Monks of Ramsgate
- New Dictionary of Saints: East and West, by Michael Walsh
- Our Sunday Visitor’s Encyclopedia of Saints
- “Blessed Ambrose of Massa”. CatholicSaints.Info. 9 May 2010. Web. 1 September 2015. <http://catholicsaints.info/blessed-ambrose-of-massa/>