Two years later [ca. 1776], she moved to the Château de Louveciennes. In the following years, she had a liaison with Louis Hercule Timolon de Cossé, Duke of Brissac.
She later also fell in love with Henry Seymour (of Redland),[20] whom she met when he moved with his family to the neighborhood of the Château. In time, Seymour became fed up with his secret love affair and sent a painting to Jeanne with the words 'leave me alone' written in English at the bottom, which the painter Lemoyne copied in 1796. The duc de Brissac proved the more faithful, having kept Jeanne in his heart even though he jealously knew of her affair with Seymour. Unfortunately, the Revolution brought misfortune for the two. Brissac had been captured while visiting Paris, and was slaughtered by a mob. Late one night, Jeanne heard the sound of a small drunken crowd approaching the Château, and into the opened window where she looked out someone threw a blood-stained cloth. To Jeanne's horror, it contained Brissac's head, at which sight she fainted.