Barbara Sophie of Brandenburg
Barbara Sophia of Brandenburg (16 November 1584 – 13 February 1636) was duchess of Württemberg by marriage to Duke John Frederick of Württemberg and acted as regent of the Duchy of Württemberg for their minor son, Duke Eberhard III of Württemberg, in 1631-1633.
She was the daughter of the Catherine of Küstrin (1549–1602) and Elector of Joachim Frederick of Brandenburg.
Louis Frederick, Duke of Württemberg-Montbéliard
Louis Frederick of Württemberg- Montbéliard( 29 January 1586 in Montbéliard – 26 January 1631 in Montbéliard) was the founder of a cadet line of the House of Württemberg known as the Dukes of Württemberg- Montbéliard.
Louis Frederick of Württemberg was born at Montbéliard Castle as the fifth child and second son of Duke Frederick I of Württemberg, and princess Sibylla of Anhalt.
Carl, Duke of Württemberg
Carl Maria Peter Ferdinand Philipp
Albrecht Joseph Michael Pius Konrad Robert Ulrich Herzog von Württemberg (born 1 August 1936) is the current head of the House of Württemberg.
Prince Frederick of Württemberg
Prince" Frederick" Charles Augustus of Württemberg( 21 February 1808 – 9 May 1870) was a General in the Army of Württemberg and the father of William II of Württemberg.
Frederick was a member of the Royal Family of Württemberg and a Prince of Württemberg.
Duchess Amelia of Württemberg
Amalie Therese Louise Wilhelmina Philippine of Württemberg( 28 June 1799 – 28 November 1848) was a Duchess of Württemberg and an ancestor of Greek, Romanian, Yugoslavian and Spanish Royal Families.
She was a daughter of Duke Louis of Württemberg and Princess Henrietta of Nassau- Weilburg.
Princess Catherine of Württemberg
Princess Catherine Frederica Charlotte of Württemberg (Stuttgart, 24 August 1821 – Stuttgart, 6 December 1898) was a daughter of William I of Württemberg and Pauline Therese of Württemberg.
She was the mother of William II of Württemberg.
Duchess Maria Isabella of Württemberg
Duchess "Maria Isabella" Philippine Theresia Mathilde Josephine of Württemberg  (30 August 1871 – 24 May 1904) was a member of the House of Württemberg and a Duchess of Württemberg by birth and a member of the House of Wettin and a Princess of Saxony through her marriage to Prince Johann Georg of Saxony.
Diane, Duchess of Württemberg
Diane, Duchess of Württemberg ("née" Princess Diane Françoise Maria da Gloria of Orléans; born 24 March 1940) is a French princess who is married to Carl, Duke of Württemberg, head of the House of Württemberg.
She is a successful artist and sculptor.
Christoph, Duke of Württemberg
Christoph of Württemberg, Duke of Württemberg (12 May 1515 – 28 December 1568) ruled as Duke of Württemberg from 1550 until his death in 1568.
Princess Augusta of Württemberg
Princess Augusta of Württemberg( 4 October 1826 in Stuttgart – 3 December 1898, ibid.) was a daughter of King William I of Württemberg and his wife, Pauline of Württemberg.

Question: When was Diane, Duchess Of Württemberg's husband born?
Answer: 1 August 1936