JEAN-MARIE-NOËL SABATIER – PAUL SEIGNERET
Servant of God PIERRE OLIVAINT – JEAN CAUBERT – ANATOLE DE BENGY
Blessed MATHIEU-HENRI PLANCHAT – Blessed ARMAND RADIGUE (LADISLAS) – Blessed JULES TUFFIER (POLYCARPE) – Blessed JEAN-MARIE ROUCHOUZE (MARCELLIN) – Blessed JEAN-PIERRE EUGÈNE TARDIEU (FRÉZAL)
Catholic Encyclopedia, also entries on Pierre Olivaint, Anatole de Bengy
Wikipedia, also entries on Pierre Olivaint, Anatole de Bengy, Henri Planchat, Ladislas Radigue, Polycarpe Tuffier, Marcellin Rouchouze, Frézal Tardieu
The Holiness of the Church in the Nineteenth Century: Saintly Men and Women of Our Own Times
The life of Paul Seigneret, seminarist of Saint Sulpice : shot at Belleville, Paris, May 26, 1871
“Catholic priests martyred during Paris Commune are beatified”
“Remembering the Catholic Martyrs of the Commune of Paris”
“« À mort les calotins ! », le massacre des otages de la rue Haxo”
“Béatification : portrait du prêtre ornais assassiné pendant la Commune”
“Ladislas, Polycarpe, Frézal et Marcellin, les quatre martyrs picpuciens”
Hagiography Circle
Art & Architecture
Wikimedia Commons , also galleries for Jean-Marie Noël Sabatier, Ladislas Radigue, Henri Planchat, Ladislas Radigue e 3 compagni
Notre-Dame des Otages, Wikimedia Commons, Church Website
Tombs of the Jesuit Fathers Pierre Olivaint, Jean Caubert, and Anatole de Bengy in the Chapelle des Martyrs at St Ignace
The tombs of the Fathers of the Congregation of the Sacred Hearts of Picpus: Ladislas Radigue, Polycarpe Tuffier, Marcellin Rouchouze and Frézal Tardieu in the Picpus cemetery
Nihil sub sole novum 
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