Duc de Beaumont
Duc de Beaumont was a French noble title created by Letters Patent in 1765 for Lieutenant General Charles-François-Christian de Montmorency-Luxembourg, Prince de Tingry.History
The lordship of Beaumont-du-Gâtinais in the Île-de-France, was raised to County for Achille de Harlay, a prominent judge and Premier President of the Parliament of Paris. The title went extinct in 1717 with his great-grandson, another Achille de Harlay, but the lands themselves were inherited by the latter's daughter, wife of the Marhall of Montmorency.
The Beaumont title was resurrected as a Dukedom for their son Charles-François-Christian de Montmorency-Luxembourg, a general in the French Army. It was a "simple dukedom", meaning his holder was not a Peer of France. It became extinct on the death of the grantee's grandson Anne-Édouard-Louis-Joseph de Montmorency-Beaumont-Luxembourg, in 1878.Counts of Beaumont (1612)
- 1612-1616 : Achille de Harlay, Premier President of the Parliament of Paris, 1st count of Beaumont.
- 1616-1671 : Achille de Harlay, Procurator General of the Paris Parliament, 2nd count of Beaumont.
- 1671-1712 : Achille de Harlay, Premier President of the Paris Parliament, 3rd count of Beaumont.
- 1712-1717 : Achille de Harlay, Advocate General of the Paris Parliament, 4th count of Beaumont.
- 1717-1749 : Louise-Madeleine de Harlay, heiress of Beaumont, wife of the Marshall of Montmorency.
Ducs de Beaumont (1765)
- 1713-1787 : Charles François Christian de Montmorency-Luxembourg.
- 1787-1790 ; 1815-1821 : Anne Christian de Montmorency-Luxembourg.
- 1821-1848 ; 1852-1878 : Anne Edouard Louis Joseph de Montmorency-Luxembourg, styled prince of Montmorency-Luxembourg.
