First Vatican Council
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The First Ecumenical Council of the Vatican, commonly known as the First Vatican Council or Vatican I, was the 20th ecumenical council of the Catholic Church, held three centuries after the preceding Council of Trent which was adjourned in 1563. Wikipedia
Start date: December 8, 1869
Founded: 1869
End date: 1960
Accepted by: Catholic Church
Attendance: 744
Documents and statements: Two constitutions:: Dei Filius; Pastor aeternus
President: Pope Pius IX