858:

Pope Nicholas I elected

1585:

Pope Sixtus V elected

Sixtus was unanimously elected successor to Gregory XIII, who had left the Papal States in disarray. He defined the college of Cardinals and is considered the founder of the Counter-Reformation.

709:

Saint Wilfrid

A monk of Lindisfarne Abbey and later Bishop of Hexham, Wilfrid spread the Benedictine Rule and worked to establish Roman Catholicism over the influence of the Celtic Church in England.

1345:

Richard de Bury