Charles Armand René de La Trémoille
Charles Armand René de La Trémoille (14 January 1708, in Paris – 23 May 1741),
6th duc de Thouars, was the son of Charles Louis Bretagne de La Trémoille and his wife, Marie Madeleine Motier de la Fayette.
La Trémoille was a French soldier and president of the States of Brittany.
He joined the military at a young age and became a colonel of the Champagne regiment at the age of eighteen.
Later, he became governor of Île-de-France.
He distinguished himself in the battle of Guastalla, in Italy, and was named shortly thereafter sergeant of the armies of the king.
La Trémoille was the author of some works and was elected a member of the Académie française on 13 February 1738.
On 29 January 1725 he married his cousin Marie Hortense de La Tour d'Auvergne, the daughter of Marie Armande Victoire de la Trémoïlle (1677–1717) and Emmanuel-Théodose de La Tour d'Auvergne, duc de Bouillon (1668–1730).
Marie Hortense, like her husband was a granddaughter of Charles Belgique Hollande de La Trémoille.
From this union was born a son:
Jean Bretagne Charles de La Trémoille and a daughter who died in infancy.
Charles Bretagne Marie de La Trémoille
Prince Charles Bretagne Marie de La Trémoille (24 March 1764 – 10 November 1839), 8th Duke of Thouars, 7th Duke of La Trémoïlle, 10th prince de Tarente, 14th prince de Talmond and 14th Count of Laval, was a French aristocrat and soldier; he was the son of Jean Bretagne Charles de La Trémoille and his wife Princess Marie-Maximilienne of Salm-Kyrburg.
Henri Charles de La Trémoille
Henri Charles de La Trémoille( 17 December 1620 – 14 September 1672) was a French military commander.
He the son of Henry de La Trémoille, duc of Thouars and of La Trémoille, and his wife, Marie de La Tour d'Auvergne.
In 1628, La Trémoille's father, Henri III of Trémoïlle, converted himself and his children to Catholicism, but La Trémoille's mother convinced him to reconvert to Protestantism when he reached the age of majority.
In 1638, he joined the army of his uncle, Frederick Henry, Prince of Orange.
In 1648, he married the Calvinist Émilie of Hesse- Kassel, the daughter of William V of Hesse- Kassel( or Hesse- Cassel).
They had five children, including Charles Belgique, his heir, and Charlotte Amélie de la Trémoille.
In October 1651, during the Fronde, he came out against Cardinal Mazarin and supported Condé openly.
As a result, in 1656 he was imprisoned in Amiens.
La Trémoille's mother obtained his release after several months of imprisonment.
He was then relegated in Poitou then turned over to serve in Holland.
In 1668, he returned from Holland to manage the affairs of the duchy of Thouars, his father being weakened by the gout, and he again re-converted to Catholicism, taking away the children from his wife who fled to the Netherlands.
He died two years before his father in 1672; it was thus his elder son, Charles, who succeeded as the fourth duke of Thouars.
Claude de La Trémoille
Claude de La Trémoille, 2nd Duke of Thouars (1566 – 25 October 1604) was a sixteenth-century French nobleman of the La Tremoille family.
He was the son of Louis III de La Trémoille and his wife, Jeanne de Montmorency.
King Henry IV of France had been friendly with La Trémoille when he was King of Navarre, but kept him in a subordinate position once he became King of France, preferring La Trémoille's cousin, Henry de La Tour d'Auvergne, the Viscount of Turenne.
In 1587, La Trémoille converted to Protestantism.
He fought for Henry IV at the battle of Coutras and also at Ivry, and was rewarded by elevation to the peerage, as Duke of Thouars, in 1595.
This new title, however, made La Trémoille lose more money than it earned him.
In 1598, Turenne proposed to his sister-in-law Charlotte-Brabantine to marry La Trémoille.
Thanks to her relations with the houses of Orange and Bouillon, Charlotte-Brabantine played an important part in the French Protestant diplomacy.
They had four children: Henry; Charlotte, who married James Stanley, Earl of Derby; Élisabeth (1601–1604); and Frédéric (1602–1642) comte de Laval.
In 1602, Charlotte-Brabantine dissuaded her husband from engaging in the conspiracy of Biron and encouraged him to lend allegiance to the king.
He died in 1604.
Charlotte de La Trémoille
" Not to be confused with Charlotte Stanley, Countess of Derby."
Princess Charlotte de La Trémoille( Charlotte Marie Clotilde de La Trémoille; 20 November 1892 – 27 October 1971), 12th Duchess of Thouars, 11th Duchess of La Trémoïlle, 14th Princess de Tarente, 18th princess de Talmond and 18th Countess of Laval was a French noblewoman and the daughter of Prince Louis Charles Marie de La Trémoille and his wife, Hélène Marie Léonie Pillet- Will.
Jean Bretagne Charles de La Trémoille
Prince Jean-Bretagne-Charles de La Trémoille (5 February 1737 – 19 May 1792), 7th Duke of Thouars, was a French soldier and the son of Charles Armand René de La Trémoille and his wife, Marie Hortense de La Tour d'Auvergne of Bouillon.
Louis Charles de La Trémoille
Prince Louis Charles de La Trémoille( 26 October 1838 – 4 July 1911), 9th Duke of Thouars, 8th Duke of La Trémoïlle, 11th prince de Tarente, 15th prince de Talmond and 15th Count of Laval was a French aristocrat and the son of Charles Bretagne Marie de La Trémoille and his third wife, Valentine Eugénie Joséphine Walsh de Serrant.
Louis Charles was also an archivist, bibliophile and also collector.
François II de La Trémoille
François de La Trémoille( 1505 – 1541) was a French nobleman of the La Tremoille family.
He was the son of Charles I de la Trémoille( killed in 1515 at the battle of Marignano) and of Louise de Coëtivy.
Henri de La Trémoille
Henri de La Trémoille( 22 December 1598 – 21 January 1674) was the 3rd Duke of Thouars, 2nd Duke of La Tremoille, and Prince of Talmond and Taranto.
He was the son of Claude de La Trémoille and his wife, Charlotte Brabantina of Nassau, and a descendant of the medieval general Louis de La Trémoille.
Marie Charlotte de La Trémoille
Marie Charlotte de La Trémoille( 26 January 1632 – 24 August 1682). was a French noblewoman member of the House of La Trémoille and by marriage Duchess of Saxe- Jena.
Born in Thouars, she was the fifth of six children born from the marriage of Henri III de La Trémoille, 3rd Duke of Thouars, 2nd Duke of La Tremoille, Prince of Talmond and Taranto, and Marie de La Tour d'Auvergne.

Question: Who is Charles Bretagne Marie De La Trémoille's paternal grandfather?
Answer: Charles Armand René de La Trémoille