Apostolici Ministerii was a papal bull issued 23 May 1724 by Pope Innocent XIII for the revival of ecclesiastical discipline in Spain.
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The Apostolic Brethren (sometimes referred to as Apostolici, Apostoli, Apostles) were a Christian sect founded in northern Italy in the latter half of the 13th century by Gerard Segarelli.
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Ab Apostolici was a papal encyclical promulgated by Leo XIII on 15 October 1890.