_He engaged on a liaison with Queen of Holland, Hortense de Beauharnais, and their son was born in Paris and was registered on 21 October 1811, named Charles Auguste Louis Joseph Demorny. Meanwhile, Flahaut battled with excellence in the 1812 Russian campaign, and he was promoted in 1813 as aide-de-camp to the emperor, general of brigade, and became general of division after the Battle of Leipzig. In 1814, after Napoleon was abdicated, he yielded to the present government, but was situated on the retired catalogue in September. He diligently attended to Queen Hortense but he was brought into active assistance again when the Hundred Days came. The mission to secure Marie Louise’s return from Vienna failed. He was at Waterloo at that time, and had sought afterwards to give the throne to Napoleon II. He was only spared from exile due to the influence of Talleyrand, but was put under the surveillance of the police. He chose to spend his retirement in Germany, and then to England after a short been living in Paris, where he got married on 20 June 1817 in Edinburgh to Margaret Mercer Elphinstone, who was the daughter of Admiral George Keith Elphinstone, 1st Viscount Keith, and when her father died, she became in her own right the 2nd Baroness Keith. Charles de Flahaut remained closely connected with Talleyrand's policy, and became an ambassador at Berlin for a short while in 1831. He continued serving the army but eventually retired. He died on 1 September 1870 in Paris, France.

_Name: Charles Joseph, comte de Flahaut
Date of Birth: 1785 – 1870
Place of Birth: Paris, France

Auguste Charles Joseph de Flahaut de La Billarderie, Comte de Flahaut de La Billarderie, born on 21 April 1785, was a French statesman and general. He was the lover of Hortense de Beauharnais, Napoleon Bonaparte's step-daughter and Queen of Holland, and they relationship brought forth an illegitimate son, named Charles Auguste Louis Joseph Demorny, who eventually became known as the Duc de Morny.

Born in Paris, he was an offspring of Alexandre Sébastien de Flahaut de La Billarderie, Comte de Flahaut de La Billarderie, who was beheaded in February 1793 at Arras, and Adélaïde Filleul, his wife, who became Mme. de Souza-Botelho afterwards. Charles de Flahaut was commonly thought to be the issue of a liaison his mother had with Talleyrand, a man with whom he had close connected his entire life. In 1792, his mother brought him into exile with her, and until 1798, was continued to live abroad.

In 1800, he enlisted as a volunteer in the army, and was granted his commission when the Battle of Marengo ended. He was also Murat’s aide-de-camp, and sustained injuries in 1805 during the Battle of Landbach. He met the Countess Potocka, Anne Poniatowski, at Warsaw, and they quickly became intimate. He was awarded the Legion of Honour after the Battle of Friedland, and in 1807, went back to Paris. In 1808, he also rendered his services to Spain, and then in Germany.