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.
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.
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.
Prince Edward, Duke of York and Albany
Prince Edward, Duke of York and Albany,( Edward Augustus; 25 March 1739 – 17 September 1767) was the younger brother of George III of the United Kingdom and the second son of Frederick, Prince of Wales, and Princess Augusta of Saxe- Gotha.
Princess Augusta of Bavaria
Princess Augusta of Bavaria, Duchess of Leuchtenberg( Strasbourg, 21 June
1788 – Munich, 13 May 1851) was the second child and eldest daughter of Maximilian I Joseph of Bavaria and Princess Augusta Wilhelmine of Hesse- Darmstadt.
By marriage, she was a French Princess.
Frederick II Eugene, Duke of Württemberg
Friedrich Eugen, Duke of Württemberg( 21 January 1732 – 23 December 1797) was the fourth son of Karl Alexander, Duke of Württemberg, and Princess Maria Augusta of Thurn and Taxis( 11 August 1706 – 1 February 1756).
He was born in Stuttgart.
From 1795 until 1797 he was Duke 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.
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.
William I of Württemberg
William I (27 September 1781 – 25 June 1864) was King of Württemberg from 30 October 1816 until his death.
Upon William's accession, Württemberg was suffering crop failures and famine in the "Year Without a Summer", in 1816.
After taking office, he initiated sweeping reforms, resulting in the approval of the Estates of Württemberg to a constitution on September 25, 1819.
In his 48-year reign, the kingdom moved from one that was created from different denominational principalities and a heterogeneous agricultural country, into a constitutional state with a common identity and a well-organised management.
In addition to his successful domestic policy, he pursued throughout his reign an ambition focused on German and European foreign policy.
Alongside the great powers of Prussia and Austria, he imagined a third major German power in the form of Bavaria, Saxony, Hanover and Württemberg.
Although this plan never succeeded, it ensured a consistent, coherent and targeted policy during his reign.
William was the only German monarch who was forced to recognise the Frankfurt Constitution of 1848.
After the failure of the March Revolution of 1848, he pursued restorative policies that counteracted his liberal image from before the revolution.
He died in 1864 at Rosenstein Castle in Bad Cannstatt and is buried in the Württemberg Mausoleum.
Duke Carl Alexander of Württemberg
Carl Alexander Herzog von Württemberg( Father Odo OSB)( 12 March 1896 – 27 December 1964) was a member of the House of Württemberg who became a Benedictine monk.
(" Herzog von Württemberg" is German for" Duke of Württemberg".)
During, and following, the Nazi era he provided aid to refugees, Jews, and prisoners of war, and was reported for these activities to the Nazi rulers of Germany.

Question: When is Princess Augusta Of Württemberg's father's birthday?
Answer: 27 September 1781