Henri du Plessis-Guénégaud, Lord of the Plessis-Belleville, Marquis de La Garnache (1610 – 16 March 1676) was a French scholar who was Secretary of State of the royal household, and Naval Minister.

Family

He was Son of Gabriel Guénégaud, Lord of the Plessis-Belleville 1638 and Marie La Croix, Dame du Plessis-Belleville 1655.
He married Isabel de Choiseul; they had children:

• Gabriel 1643
• Caesar Phoebus +
• Roger 1645
• Claire Bénédicte 1646-1675
• Henry 1647-1722
• Emmanuel
• Elisabeth Angelique

He was the brother of Claude's treasurer, brother in law of César d'Albret who married his sister Madeleine.
It was as secretary to Dubuisson Aubenay. He built the hotel Guénégaud.

Offices

• Secretary of State for the Royal Household in 1643 to 1669 under Louis XIV
• State Secretary of the Navy 23 March 1643 to 1662 under Louis XIII and Louis XIV
• Keeper of the Seals of the Order of the Holy Spirit
  Holy Spirit
  Holy Spirit is a term introduced in English translations of the Hebrew Bible, but understood differently in the main Abrahamic religions.While the general concept of a "Spirit" that permeates the cosmos has been used in various religions Holy Spirit is a term introduced in English translations of...
  
  
• Advisor to the King and treasurer of his savings