Pope Leo IX was the head of the Catholic Church and ruler of the Papal States from 12 February 1049 to his death in 1054. Leo IX is considered to be one of the most historically significant popes of the Middle Ages; he was instrumental in the precipitation of the Great Schism of 1054, considered the turning point in which the Catholic and Eastern Orthodox Churches formally separated.
Christian feast day: Pope Leo IX
Christian feast day: Pope Leo IX
On April 19, in the year 0, Christian feast day: Pope Leo IX. This event is recorded as a Holidays event in the history of April 19, one of 299 recorded events on this date across all of history.
Key Facts
- This event took place on April 19, 0 (AD era).
- It is categorised as a Holidays event in recorded history.
- Referenced in 1 Wikipedia article.
- Wikipedia source last updated on 22 March 2026.
On This Date in History 299
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