Who Was Alive

Were Al-Khwarizmi and Pope Gregory IV alive at the same time?

Yes. Al-Khwarizmi and Pope Gregory IV were alive at the same time, from c. AD 795 to AD 844.

Al-Khwarizmi

Al-Khwarizmi

Mathematician and astronomer

Born c. AD 780 · died c. AD 850

Pope Gregory IV

Pope Gregory IV

Catholic priest who served as Pope

Born c. AD 795 · died 25 January AD 844

  1. Jabir ibn Hayyan, AD 721 – AD 815
  2. Charlemagne, c. AD 744 – AD 814
  3. Abu Nuwas, c. AD 759 – AD 814
  4. Harun al-Rashid, AD 766 – AD 809
  5. Al-Khwarizmi, c. AD 780 – c. AD 850
  6. Adi Shankara, c. AD 788 – c. AD 821
  7. Pope Gregory IV, c. AD 795 – AD 844

Al-Khwarizmi and Pope Gregory IV in bold, with some of their best-known contemporaries; dashed lines mark world events. Drag across, or use the arrow keys, to see the age each reached in any year. Faded ends mark uncertain dates.

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Where Al-Khwarizmi and Pope Gregory IV were born

Al-Khwarizmi and Pope Gregory IV are labelled, with the contemporaries on the timeline. Each dot is a birthplace from Wikidata (6 of 7 placed); tap one to open that person.
Birthplaces as a list