Religion · Politics · 1535–1605

Leo XI — Age, Birthday & Biography

Born: 2 June 1535 · Died: 27 April 1605 · Age at death: 69

How old was Leo XI when he died?

Leo XI died aged 69. He was born on 2 June 1535 and died on 27 April 1605.

Pope whose reign lasted only twenty-seven days in 1605

Did you know?Known as the "Lightning Pope" because his papacy was so short, he was a member of the powerful Medici family of Florence.

Quick facts

  • Date of birth2 June 1535
  • Date of death27 April 1605
  • Age at death69
  • NationalityItalian
  • BirthplaceFlorence, Italy
  • Occupationdiplomat, Catholic priest, Catholic bishop

Editor's Take:

Leo XI's papacy is one of the shortest in history, but the path that led to it was long. A member of the powerful Medici family, he served Florence and Rome as a churchman for decades. As papal envoy to France he helped reconcile the Holy See with Henry IV after the king's conversion to Catholicism. That work made him a favourite of the French at the conclave of 1605. He was already about 69 when elected. He fell ill within weeks and died before he could shape the Church.

Key Milestones

  1. 1574: Becomes Archbishop of Florence
  2. 1583: Made a cardinal
  3. 1605: Elected pope, dying weeks later

Pope Leo XI (Italian: Leone XI; 2 June 1535 – 27 April 1605), born Alessandro di Ottaviano de' Medici, was head of the Catholic Church and ruler of the Papal States from 1 April 1605 to his death, on 27 April 1605. His pontificate is one of the briefest in history, lasting under a month.

Text from Wikipedia, licensed under CC BY-SA 4.0

Profile

Leo XI: The Medici Pope of Less Than a Month

Italian pope, born 1535

Leo XI was born in Florence on 2 June 1535.

He was born Alessandro Ottaviano de' Medici in Florence.

He was elected pope on 1 April 1605.

He died less than a month later, on 27 April 1605.

Career highlights

  1. 1574Florence: becomes archbishop of the city
  2. 1583Cardinal: elevated by Gregory XIII
  3. 1596France: papal legate to Henry IV
  4. 1605Pope: elected on 1 April
  5. 1605Death: dies after catching a chill

Did you know?He was a devoted follower of the priest Philip Neri, later made a saint.

Age at death
69
Years since death
421

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Questions people ask

Frequently asked questions

When is Leo XI's birthday?
Leo XI's birthday is June 2. He was born on June 2, 1535 in Florence, Italy.
How old was Leo XI when he died?
Leo XI died on April 27, 1605, aged 69.
Who shares a birthday with Leo XI?
Famous people who share Leo XI's June 2 birthday include Pius X, Thomas Hardy, Marquis de Sade, Karl Adolph Gjellerup and Sergio Agüero.

Born on the same day6

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Reviewed by the Who Shares My Birthday editorial team.

Last reviewed: October 2026