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<i>Portrait of <a href="https://en.wikipedia.org/wiki/Anne-Catherine_de_Ligniville,_Madame_Helv%C3%A9tius" class="extiw" title="w:Anne-Catherine de Ligniville, Madame Helvétius">Anne-Catherine de Ligniville, Madame Helvétius</a> (1722-1800)</i></div>
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Unknown artist<span style="display: none;">Unknown artist</span></div>
18<sup>th</sup> century <div style="display: none;">date QS:P571,+1750-00-00T00:00:00Z/7</div>
Jules Bertaut, <i>Égéries du XVIIIe siècle : madame Suard, madame Delille, madame Helvétius, madame Diderot, mademoiselle Quinault</i>, Paris, Plon 1928. Original uploader was <a href="https://fr.wikipedia.org/wiki/User:Jaucourt" class="extiw" title="fr:User:Jaucourt">Jaucourt</a> at <a class="external text" href="https://fr.wikipedia.org">fr.wikipedia</a>