The father of the child was her lover at that time, the poet Jean-François de Saint-Lambert, although she had plotted with Voltaire and Saint-Lambert to engineer a situation in which her husband thought he was the father.
Ang ama ng bata ay ang kanyang lover sa oras na iyon, ang makata Jean-François de Saint-Lambert, kahit na siya had plotted na may Voltaire at Saint-Lambert engineer sa isang sitwasyon na kung saan ang kanyang asawa-iisip siya ay ang ama.