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v1 · public beta

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Cosimo III de' Medici, Grand Duke of Tuscany

Grand Prince of Tuscany (1642-1723)

  • Fame54.5
  • Momentum0.5
  • Founders rank#216
Source-basedStable
  • Fame54.5
  • Momentum0.5
  • Founders rank#216
  • Wikipedia7K
Lived 1642–1723, aged 81
FoundersFounder
  • Wikipedia
    30 languages
    Cross-language footprint
  • Era
    1642–1723
    Aged 81
Network

In their orbit

People connected to Cosimo III de' Medici, Grand Duke of Tuscany

Marguerite Louise d'Orléans
SpouseMarguerite Louise d'Orléans
Ferdinando II de' Medici, Grand Duke of Tuscany
FatherFerdinando II de' Medici, Grand Duke of Tuscany
Vittoria della Rovere
MotherVittoria della Rovere
Ferdinando de' Medici, Grand Prince of Tuscany
ChildFerdinando de' Medici, Grand Prince of Tuscany
Anna Maria Luisa de' Medici
ChildAnna Maria Luisa de' Medici
Gian Gastone de' Medici, Grand Duke of Tuscany
ChildGian Gastone de' Medici, Grand Duke of Tuscany
Francesco Maria de' Medici, Duke of Rovere and Montefeltro
SiblingFrancesco Maria de' Medici, Duke of Rovere and Montefeltro
Summary
Updated 2026-06-09

He held Tuscany for fifty-three years — the longest reign in its history — and watched it collapse into economic ruin under his hand. Cosimo III spent his final decades trying to rewrite succession law so his daughter could inherit, a campaign that died with him.

Key facts
Profile type
Founder
Category
Founders
Category rank
#216
Last updated
2026-06-09
Biography

About

Cosimo III became Grand Duke in 1670, the elder son of Ferdinando II and sixth Medici to rule Tuscany. His marriage to Marguerite Louise d'Orléans, cousin of Louis XIV, was solemnized by proxy at the Louvre in 1661 and proved disastrous; she eventually abandoned Florence for a convent in Montmartre. They had three children: Ferdinando in 1663, Anna Maria Luisa in 1667, and Gian Gastone in 1671. His reign was marked by laws regulating prostitution and May celebrations, and by Tuscany's slide into previously unknown economic lows. When it became clear his sons would produce no heirs, he tried to…

Voice

In their own words

Sourced, dated quotes from Cosimo III de' Medici, Grand Duke of Tuscany

Cosimo III de' Medici, Grand Duke of Tuscany
said · undated
I hope for nothing in this world so ardently as once again to see [that] paradise called England. I long to embrace again all my old friends there.
— Reported in Christopher Hibbet, The House of Medici: Its Rise and Fall (New York: William Morrow & Co, 1975) ch. 23, pp. 292–93
via Wikiquote · CC BY-SA
Gallery

Photos

8 images · refresh overdue
Filed under

Tags & topics

#Politicians#Founder#Founders#Politics#Early Modern Era
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By the numbers

Score breakdown

The six component signals behind the Fame score, and their ranks across the leaderboards.

Fame
Stable
54.5
Composite of search demand, mentions, audience & graph footprint.
Score components
Momentum0.5
Historical23.5
Source confidence60.0
Completeness60.0
Global rank
—
Country rank
—
Category rank
→
#216
Receipts

Sources

  • Wikidata
    wikidata · wikidata.org
    High confidence
  • Wikipedia
    wikipedia · en.wikipedia.org
    High confidence
  • Pantheon 2.0
    database · pantheon.world
    High confidence
Identity

Quick facts

Country
—
Category
Founders
Profile type
Founder
Status
deceased
Born
August 14, 1642
Died
October 31, 1723
Wikipedia
View article
Last updated
1mo ago
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  • #216 in Founders→
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