Éléonore Desmier d'Olbreuse
GRANDMOTHER OF GEORGE II OF GREAT BRITAIN AND GREAT-GRANDMOTHER OF FREDERICK THE GREAT
Eleonore Desmier, Countess of Williamsburg; Eleanore d'Olbreuse; Eleonore Desmier d' Olbreuse; Eleonore Desmier d'Olbreuse; Eleonore d'Esmier d'Olbreuse; Eleonore d'olbreuse; Éléonore d'Esmier d'Olbreuse; Éléonore d'Olbreuse; Eleonore d'Olbreuse; Eleanor Desmier
Éléonore Desmier (3 January or 7 January or 9 January 1639 – 5 February 1722), was a French noblewoman, who became firstly the mistress and later wife of George William of Brunswick, Duke of Lauenburg and Prince of Celle. She was the mother of Sophia Dorothea of Celle, who was the wife of George I of Great Britain.