Diane de France, Duchess of Angoulême

Diane de France, suo jure Duchess of Angoulême (25 July 1538 – 11 January 1619) was the illegitimate daughter of Henry II of France and his Italian lover Filippa Duci. Diane played an important political role during the French Wars of Religion and built the Hôtel d'Angoulême in Paris. She was the favorite of her half-brother, Henry III of France.

Birth and early life Born 25 July 1538, Diane was the illegitimate daughter of eighteen-year-old dauphin Henry and Filippa Duci, the daughter of a minor Italian nobleman of Fossano in the Piedmont. Diane had been conceived when her father was in Moncalieri in northern Italy on a military campaign. It is not known whether she was born at court or was brought there when still very young. At court, her care and upbringing were entrusted to Henry's younger sister, Margaret.

Diane's father treated her well: her household included a governess, tutors, maids of honor, chamber valets, and even a tailor. She learned to write in excellent French, the proof of which can be seen in the large number letters that still survive. She also learned Italian (the second language of the court), Spanish, and enough Latin for religious ceremonies. Her artistic education was not neglected: she also learned to play lute and other instruments, and to sing.

She was not formally legitimised until much later, in 1572 (not 1547 as previously believed).

First marriage On 13 February 1552, when Diane de France was thirteen, a contract was signed by which she married Orazio Farnese, Duke of Castro . The wedding ceremony on 15 February 1553 was attended by Orazio's brother Cardinal Alessandro Farnese and included masquerades and carnival banquets. She became a widow five months later, on 18 July 1553, when Orazio was killed while serving with French forces at the siege of Hesdin. She spent her period of mourning at the Château de Chantilly, home of Anne de Montmorency, Connétable de France, then returned to court in the service of Catherine de Medici.

Second marriage Diane's second marriage was to François de Montmorency, eldest son of Anne de Montmorency, by a contract of 3 May 1557 and a ceremony that took place on 4 June 1557 at the Château de Villers-Cotterêts. They had a son, named Anne after his grandmother, born by late September 1560 but dead before 15 October.

On 22 June 1563, after the death of her father and then her half-brother Francis II, the new king, her half-brother Charles IX gave her, by lettres patentes signed at the Château de Vincennes, the Duchy of Châtellerault. The annual revenues of about 6,000 livres were meant to compensate for the gift of 50,000 écus promised for her first marriage but never paid from the royal treasury. The revenues from this duchy were far less than what she was owed. After the death of Charles, Diane became a favourite of the new king, her other half-brother Henri III. In February 1576, he signed additional lettres patentes, giving her the lands and seigneuries of Coucy and Folembray, including the Château de Folembray (both in today's département of Aisne), as well as some other estates in the Bourbonnais.

Diane was widowed for a second time in 1579, after helping make her husband a leader of the politiques, a moderate Catholic group in France.

Diane was influential in the reconciliation of Henry III with Henry of Navarre and enjoyed much respect at court when the latter became king as Henry IV. She also helped to raise her niece, Charlotte de Montmorency, with whom Henry IV was later to fall in love.