Society_of_St._Pius_X The Society of St. Pius X (SSPX) is an international Traditionalist Catholic organisation, founded in 1970 by the French Archbishop Marcel Lefebvre.The Society's official Latin name is Fraternitas Sacerdotalis Sancti Pii X, meaning "Priestly Fraternity of St. Pius X". It is composed of 486 priests, together with "religious members who are brothers, sisters, and oblates, and by affiliation, Third Order members".
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