Henri I de Saint-Nectaire, marquis de La Ferté-Nabert, (1573 - Paris, 4 January 1662), was a French general and diplomat.
He was a son of the Marquis François de Saint-Nectaire, State Councilor and Knight of the Order of the Holy Spirit, and of Jeanne de Laval, mistress of King Henry III.
He joined the King's Army at a young age and by 1622, he was Maréchal de camp in the army of Louis, Count of Soissons at La Rochelle. Then he was Lieutenant general in the government of Champagne.
From 1634 until 1637, Saint-Nectaire was ambassador to England, then ruled by King Charles I of England, but still before the English Civil War.
He was subsequently Minister of State and a Knight of the Order of the Holy Spirit.
He married first Marguerite de La Châtre, daughter of Claude de La Châtre de La Maisonfort, and had
Then he married in second marriage Anne de Sully-Rosny, bastard daughter of Maximilian II of Béthune.[1]