Elizabeth's father was the owner of the Taman and Kynovsky factories and more than half a million acres of land.
Her mother Elizaveta Alexandrovna Zagryazhskaya was a lady in waiting and a famous beauty of Catherine II's court.
Born in St. Petersburg, baptized on 2 December 1776 in St. Sergius Cathedral under the adoption of sister Catherine and brother Gregory.
Husband Nikolai Demidov became a diplomat in 1800 and the young couple set up home in Paris, in the Hôtel de Brancas-Lauragais, at the corner of Rue Taitbout and Boulevard des Italiens, becoming strong supporters of Napoleon I of France.
Later, by order of her son Anatoly Demidov, the architect Zhoret and the sculptor Quaglia created a majestic mausoleum with white marble columns.