If the English visit may be regarded as having finished 1 Gabrielle Emilie Le Tonnelier de Breteuil, marquise du Chatelet (1706-1749), was the daughter of the baron de Breteuil, and married the marquis du Chatelet-Lomont in 1725.
In 1605 Conti, whose first wife Jeanne de Cdeme, heiress of Bonnetable, had died in 1601, married the beautiful and witty Louise Marguerite (1574-1631), daughter of Henry duke of Guise and Catherine of Cleves, whom, but for the influence of his mistress Gabrielle d'Estrees, Henry IV.
In June 1598 he left Holland and proceeded to Paris, where on the 10th of April 1 599 he saw the body of Gabrielle d'Estrees lying in state.
The new duchy passed to Diane de Poitiers (1553), to Catherine of Lorraine, duchess of Montpensier (1578), to Marguerite of Valois (1582) and to Gabrielle d'Estrees (1598).
Prince Billow's great-uncle, Heinrich von Billow, who was distinguished for his admiration of England and English institutions, was Prussian ambassador in England from 1827 to 1840, and married a daughter of Wilhelm von Humboldt (see the letters of Gabrielle von Billow).