Pope John IV
Pope · Religious Figures · Lived 600 to 642 · aged 42
A seventh-century pope who spent his brief reign correcting Easter calculations in the Celtic churches and drawing doctrinal lines against Monothelitism - the belief that Christ had only one will.
Pope John IV is read about 78 times a day, in 72 languages.
A typical day, 30 days to 10 November 2026
The middle day of the days counted, so one week of news cannot move it. The line under it is the last 400 days, one point a day.
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About this person
John IV became bishop of Rome on 24 December 640 after a four-month vacancy left the seat open. He immediately turned his attention outward: he wrote to the clergy of Ireland and Scotland, pointing out errors in their reckoning of Easter's date, and formally condemned Monothelitism as heresy. Sacred tradition credits him with establishing the Catholic Church in Croatia through Abbot Martin. He died on 12 October 642, less than two years after his election.
