[3][5] Fabien Proteau, father of Isabelle, was a Burgundian; he served as a valet to the Viscount of Jaucourt until his death on 17 April 1771.

[3][4][7] It's possible Isabelle met Jean-Antoine Houdon from her early childhood with the Jaucourt family.

[8][note 1] On 19 July 1792, Isabelle discreetly married André-Pierre Pinson [fr] in a property he had purchased from Louis Philippe II, Duke of Orléans in the Clichy-en-Launois (now Clichy-sous-Bois).

PinsonAnatomistPerfectly lovedby a virtuous husband,her constant thought was to make him happySince then, she has honored his cherished memoryPray for her.

In 1811, Isabelle and her husband acquired a property called the "Ferme de Rochefort" in Saint-Germain-lès-Corbeil.