William Bentinck, 2nd Duke of Portland
William Bentinck, 2nd Duke of Portland (1 March 1709 – 1 May 1762), styled Viscount Woodstock from 1709 to 1716 and Marquess of Titchfield from 1716 to 1726, was a British peer and politician.
Portland was the son of Henry Bentinck, 1st Duke of Portland and his wife Elizabeth Noel, daughter of Wriothesley Baptist Noel, 2nd Earl of Gainsborough.
He succeeded his father in the dukedom as a teen in 1726.
He was an original governor of the Foundling Hospital in London, founded in 1739, and was made a Knight of the Garter in 1741.
On 11 June 1734 he married Lady Margaret Harley, daughter of Edward Harley, 2nd Earl of Oxford and Earl Mortimer.
They had six children:
The Duke did not seek any public office, but focused on his family life at the family seat, Bulstrode Park.
Portland is identified in "The Handy-Book of Literary Curiosities" (1909) as one of the perpetrators of The Great Bottle Hoax of 1749, in which a large crowd was lured to a London theatre with the expectation of seeing a man jump into a "quart bottle".
Portland died in May 1762, aged 53, was buried at Westminster Abbey.
He was succeeded in the dukedom by his eldest son William, who became Prime Minister of Great Britain.
The Duchess of Portland died in 1785.
Charles Lennox, 2nd Duke of Richmond
Charles Lennox, 2nd Duke of Richmond, 2nd Duke of Lennox, 2nd Duke of Aubigny,( 18 May 17018 August 1750) was a British nobleman, peer, and politician.
He was the son of Charles Lennox, 1st Duke of Richmond, an illegitimate son of King Charles II.
He held a number of posts in connection with his high office but is best remembered for his patronage of cricket.
He has been described as the most important of the sport's early patrons and did much to help its evolution from village cricket to first- class cricket.
Henry Bentinck, 1st Duke of Portland
Henry Bentinck, 1st Duke of Portland (17 March 1682 – 4 July 1726), of Titchfield, Hampshire, styled Viscount Woodstock from 1689 until 1709, was a British Whig politician who sat in the English and British House of Commons from 1705 until 1709 when he succeeded to the perage as Earl of Portland.
He was Governor of Jamaica from 1721 to 1726.
Louis, duc Decazes
" Louis"- Charles- Élie- Amanien Decazes de Glücksbierg, 2nd Duke Decazes and 2nd Duke of Glücksbierg( 29 May 1819 – 16 September 1886), was a French diplomat and statesman.
Edmond de Talleyrand-Périgord
Edmond de Talleyrand- Périgord, 2nd Duke of Talleyrand, 2nd Duke of Dino( 1 August 1787, Paris – 14 May 1872, Florence), was a French general of the Napoleonic Wars.
George of Naples
George( date of birth unknown; died 739) was the Duke of Naples for a decade beginning in 729.
Dorothy Bentinck, Duchess of Portland
Dorothy Bentinck, Duchess of Portland(" née" Lady Dorothy Cavendish; 27 August 1750 – 3 June 1794) was Duchess of Portland as wife of William Cavendish- Bentinck, 3rd Duke of Portland, the Prime Minister of Great Britain.
She is also a great- great- great- grandmother of Queen Elizabeth II through the queen's maternal grandmother.
James Douglas, 2nd Duke of Queensberry
James Douglas, 2nd Duke of Queensberry and 1st Duke of Dover( 18 December 16626 July 1711) was a Scottish nobleman.
James Fitz-James Stuart, 2nd Duke of Berwick
James Francis( Jacobo Francisco) Fitz- James Stuart, 2nd Duke of Berwick, 2nd Duke of Liria and Xérica( Saint- Germain- en- Laye, France, 21 October
1696 – Naples, Italy, 2 June 1738) was a Jacobite and Spanish nobleman.
He inherited titles in the Jacobite and Spanish nobility on the death of his father in battle in 1734 at Philippsburg, during the War of the Polish Succession.
He was also Consort Duke of Veragua and of la Vega and a Consort- Marquis of four further titles by his Spanish marriage in 1716.
His full title was 2nd Duke of Berwick, 2nd Earl of Tinmouth, 2nd Baron Bosworth, 2nd Duke of Liria and Xerica, Grandee of Spain 1st class( from 1716), Knight of the Order of the Golden Fleece( from 29 September 1714), as well as the holder of several earldoms.
William Graham, 2nd Duke of Montrose
William Graham, 2nd Duke of Montrose( 27 August 1712 – 23 September 1790) was the son of James Graham, 1st Duke of Montrose, and his wife, Christian Carnegie.
He married Lucy Manners, daughter of John Manners, 2nd Duke of Rutland on 28 October 1742.
He died at age 78 at Twickenham, London, England.

Question: When is William Bentinck, 2Nd Duke Of Portland's father's birthday?
Answer: 17 March 1682