Blessed Pius IX

Born: May 13, 1792 (exactly 125 years before Our Lady of Fatima appeared)

Died: Feb 7, 1878 (Feast Day)

Champion of stamping out heresies.

Called the First Vatican Council.

Confirmed papal infallibility and solemnly defined the Immaculate Conception.

Among his writings are the famed Syllabus of Errors, Quanta Cura, and Quanto Conficiamur Moerore.