De Trenquelléon was born on 10 June 1789 in the Castle of Trenquelléon, located in Feugarolles, in the ancient Province of Guyenne.
He fought in Picardy (1636), in Guyenne, and finally against the Spaniards, and repressed the Peasants' Revolt (Révolte des Croquants) in 1637.
He was the son of Louis-Amable Bigot (1663-1743), Conseilleur du Roi, Counsellor to the Parliament at Bordeaux and Receiver General to the King; by his wife, Marguerite de Lombard (1682-1766), daughter of Joseph de Lombard, Baron du Cubzagués, Commissioner of the Marine at Guyenne and a representative of an old and powerful Guyenne family.
The French decisively defeated the English at the Battle of Taillebourg and concluded the struggle at the Siege of Saintes, but because of dynastic sensibilities and the desire to go on a crusade, Louis did not annex Guyenne.
Born at Clairac, near Agen in the Lot-et-Garonne and raised as a Huguenot, Théophile de Viau participated in the Protestant wars in Guyenne from 1615–16 in the service of the Comte de Candale.
Manny also took part in the campaigns of the Earl of Derby in Guyenne, being present at the battles of Bergerac and Auberoche.