Henriette soon obtained an office at court as the lady-in-waiting of Queen Catherine de' Medici.[2] She became the intimate personal friend and confidant of Princess Marguerite. On 4 March 1565, 22-year-old Henriette married Louis I Gonzaga, Prince of Mantua in Moulins, Bourbonnais.[1][3]
Duchess of Nevers and Rethel
After her eldest brother Francis had died in 1562 and brother James in 1564 without leaving heirs, Henriette became the suo jure 4th Duchess of Nevers and Countess of Rethel. She had been left with enormous debts from her late father and brothers, but managed her lands well and brought the financial situation back in order. Her profits were such that she eventually became one of the chief creditors of France[4]'s unstable state during the Wars of Religion.
Henriette died at the Hôtel de Nevers in Paris, on 24 June 1601 at the age of 58. She was buried in Nevers Cathedral at the side of her husband, who had preceded her in death in 1595.
Frederick (11 March 1573 - 22 April 1574): Died in infancy.
Francis (17 September 1576 - 13 June 1580): Died in childhood.
Charles (6 May 1580- 20 September 1637): Succeeded his parents as Duke of Nevers, Rethel, Mantua, and Montferrat. Married Catherine Mayenne,[1] daughter of Charles of Lorraine, Duke of Mayenne and Henriette of Savoy, Marquise of Villars, by whom he had six children, including Charles II Gonzaga and Anna Gonzaga.
Rumors
It was rumoured that Henriette became lovers with Annibal de Coconas [fr], a Piedmontese adventurer who was beheaded in 1574, along with Joseph Boniface de La Môle, for participating in a conspiracy against King Charles IX which was supported by the Duke of Alençon.[2] It was alleged that she and Marguerite (now Queen of Navarre) woke up the middle of the night, removed the heads which had been placed on public display, embalmed them, and buried them in consecrated ground.[5]
Elliott, Lisa Keane (2012). "Charitable Intent in Late Sixteenth Century France: The Nevers Foundation and Single Poor Catholic Girls". In Scott, Anne M. (ed.). Experiences of Poverty in Late Medieval and Early Modern England and France. Routledge.