Duke of

Mayenne Mayenne ( ) is a landlocked department in northwest France named after the river Mayenne. Mayenne is part of the administrative region of Pays de la Loire and is surrounded by the departments of Manche, Orne, Sarthe, Maine-et-Loire, and Il ...

(duc de Mayenne) is a title created for a cadet branch of the House of Guise. It subsequently passed by marriage to the Gonzaga in 1621, who sold it to

Cardinal Mazarin Jules Mazarin (born Giulio Raimondo Mazzarino or Mazarini; 14 July 1602 – 9 March 1661), from 1641 known as Cardinal Mazarin, was an Italian Catholic prelate, diplomat and politician who served as the chief minister to the Kings of France Lou ...

in 1654; he bestowed it on his niece, Hortense Mancini in 1661. Due to the terms of the

entailment Logical consequence (also entailment or logical implication) is a fundamental concept in logic which describes the relationship between statements that hold true when one statement logically ''follows from'' one or more statements. A valid l ...

on the title, it became extinct in 1781, but it is still claimed by the

Sovereign Prince of Monaco The sovereign prince () is the monarch and head of state of the Principality of Monaco. All reigning princes and princesses have taken the name of the House of Grimaldi. When Prince Rainier III died in 2005, he was Europe's longest reigning m ...

, a descendant of Hortense.

Dukes of Mayenne (1573)

* Charles Ι de Lorraine (1573–1611), also known as Charles de Guise * Henry of Lorraine (1611–1621) * Charles II Gonzaga (1621–1631) * Ferdinand Gonzaga (1631–1632) * Charles III Gonzaga (1632–1654) *

(1654–1661) * Hortense Mancini (1661–1699) *Paul-Jules de La Porte (1699–1731) *Guy-Paul-Jules de La Porte (1731–1738) *Louise-Jeanne de Duras (1738–1781) Due to various entailments, Louise-Jeanne could not pass on the title, which became extinct at her death. Her daughter, Louise-Félicité d'Aumont, married Honoré IV, Prince of Monaco, and their descendants still claim the title.

Dukes of Mayenne (1573)

See also