Longjumeau (earldom of)

The earldom of Longjumeau is a fiefdom that was established as a result of the marriage of the Duke of Valentinois (the future Prince Honoré IV) to Louise d'Aumont-Mazarin in 1777.

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Related Places :
Chilly (marquisate of)
Mayenne (earldom of)
Château-Porcien (Principality of)