| Louis Charles Marie de La Trémoille | |
| 10th Duke of Thouars (more...) | |
| Succession: | 10th Duke of Thouars |
| Reign: | 4 July 1911 – 17 June 1921 |
| Reign-Type: | period |
| Predecessor: | Louis Charles de La Trémoille |
| Successor: | Louis Jean Marie de La Trémoille |
| Spouse: | Hélène Marie Léonie Pillet-Will (m. 1892–1921; his death) |
| Issue: | Charlotte, 12th Duchess of Thouars Marguerite, Duchess of Blacas Hélène, Duchess of La Roche-Guyon Antoinette, Duchess of Ursel Louis Jean Marie de La Trémoille, 11th Duke of Thouars |
| Noble Family: | La Trémoille |
| Father: | Louis Charles de La Trémoille, 9th Duke of Thouars |
| Mother: | Marguerite Jeanne Tanneguy-Duchâtel |
| Birth Date: | 28 March 1863 |
| Birth Place: | Paris, Empire of France (now French Fifth Republic) |
| Death Place: | Paris |
| Religion: | Roman Catholicism |
Louis Charles Marie de La Trémoille, 10th Duke of Thouars (28 March 1863 – 17 June 1921), 10th Duke of Thouars, 16th Count of Laval was a French nobleman.
Trémoille was born on 28 March 1863 in Paris, Empire of France. He was the son of Louis Charles de La Trémoille and his wife Marguerite Églé Jeanne Caroline Duchâtel (daughter of Count Charles Marie Tanneguy Duchâtel and his wife Rosalie ("Eglé") Paulée).
La Trémoille was a deputy for Gironde from 1906 to 1919, and mayor of Margaux from 1904 to 1919. He was a member of the democratic left.
On 1 February 1892, he married Hélène Marie Léonie Pillet-Will (1875–1964), the daughter of Count Frédéric Pillet-Will and his wife, Jeanne Marie Clotilde Briatte. Together, they had five children:[1]
Louis died on 17 June 1921 in Paris. As his son Louis was killed in a fire at the estate of L. Hamilton McCormick in Whitchurch, Hampshire in 1933,[2] [3] his daughter Charlotte then inherited his titles, however, this has been disputed.[4]
Through his daughter Princess Charlotte, he was a grandfather of Prince Jean Charles Lamoral of Ligne-La Trémoïlle (himself the father of Princess Hedwige de Ligne, who married the Prince of Mérode and were parents of Prince Emmanuel de Merode; and Prince Charles-Antoine Lamoral of Ligne-La Trémoïlle).
Through his daughter Princess Antoinette, he was a grandfather of Antonin, 9th Duke d'Ursel.[5]