

A Medici pope whose entire reign lasted just 27 days, a fleeting moment of power after a lifetime of diplomatic service to the Church.
Alessandro de' Medici's path to the papacy was long and paved by his family's influence and his own capable diplomacy. Known as the 'Cardinal of Florence,' he served as a papal ambassador to France for over a decade, where he earned a reputation for intelligence and firmness. His election in April 1605, heavily supported by the French king, was a triumph for his dynasty but a short-lived personal victory. At age 69, he was crowned Pope Leo XI, but fell ill immediately after the lengthy ceremony. He died less than a month later, his plans for Church reform and moderation left entirely unrealized. His pontificate remains a historical footnote, a poignant example of ambition culminating in a mere whisper of power, remembered primarily for its brevity and its holder's distinguished service before donning the white cassock.
The biggest hits of 1535
The world at every milestone
His mother was a first cousin of Catherine de' Medici, Queen of France.
Due to his brief reign, he is often called 'Papa Lampo' ('Lightning Pope').
His election was secured with the crucial support of King Henry IV of France.
“My reign will be measured in weeks, but my service to the Church spanned decades.”