Augustus FitzRoy, 7th Duke of Grafton
Augustus Charles Lennox FitzRoy, 7th Duke of Grafton (22 June 1821 – 4 December 1918), styled Lord Augustus FitzRoy before 1882, was the second son of Henry FitzRoy, 5th Duke of Grafton and his wife, Mary Caroline, daughter of Admiral the Hon.
Sir George Cranfield Berkeley.
On 9 June 1847, he married Anna Balfour, daughter of James Balfour MP, and had four children:
He died in 1918, aged 97, at Wakefield Lodge, near Potterspury, Northamptonshire.
Henry James FitzRoy, Earl of Euston
Henry James FitzRoy, Earl of Euston( 28 November 1848 – 10 May 1912) was the eldest son and heir apparent of Augustus FitzRoy, 7th Duke of Grafton.
His mother was the daughter of MP James Balfour.
Fortune FitzRoy, Duchess of Grafton
Ann Fortune FitzRoy, Dowager Duchess of Grafton,( née Smith; 24 February 1920), is the widow of Hugh FitzRoy, 11th Duke of Grafton.
She has been Mistress of the Robes since 1967.
Alfred FitzRoy, 8th Duke of Grafton
Alfred William Maitland FitzRoy, 8th Duke of Grafton( 3 March 1850 – 10 January 1930), styled Lord Alfred FitzRoy between 1882 and 1912 and Earl of Euston between 1912 and 1918, was the second son of Augustus FitzRoy, 7th Duke of Grafton and his wife Anna Balfour, daughter of James Balfour( 1845) and aunt of Arthur Balfour.
His elder brother and heir to the dukedom Henry James FitzRoy, Earl of Euston died in 1912, before their father's death.
He married, firstly, Margaret Rose Smith( 1855–1913), on 27 April 1875 and had three children:
The 8th Duke married, secondly, Susanna Mary McTaggart- Stewart( 1878 – 1961), on 8 January 1916 and had two daughters:
On 15 March 1920, he was appointed a deputy lieutenant of Suffolk.
The Duke died in 1930 and was succeeded by his grandson, John, Earl of Euston.
Lord Augustus FitzRoy
Lord Augustus FitzRoy( 16 October 171624 May 1741) was a British officer of the Royal Navy.
He served during the War of the Austrian Succession, and was involved in the capture of the Spanish ship of the line," Princesa", a major prize in the war.
He was also the father of Augustus FitzRoy, 3rd Duke of Grafton, who became Prime Minister of Great Britain.
Henry FitzRoy, 5th Duke of Grafton
Henry FitzRoy, 5th Duke of Grafton (10 February 1790 – 26 March 1863), styled Viscount Ipswich until 1811 and Earl of Euston between 1811 and 1844, was a British peer and politician.
Grafton was the son of George FitzRoy, 4th Duke of Grafton and Lady Charlotte Maria Waldegrave, daughter of James Waldegrave, 2nd Earl Waldegrave.
The 6th Duke was a politician.
He represented Bury St Edmunds as a Whig between 1818 and 1820 and again between 1826 and 1831, and was member for Thetford between 1834 and 1841.
On 24 May 1830, he was commissioned colonel of the West Suffolk Militia.
Grafton married Mary Caroline Berkeley (daughter of Admiral the Hon.
Sir George Cranfield Berkeley), on 20 June 1812 in Portugal.
They had five children:
Grafton died in 1863, aged seventy-three, at Wakefield Lodge, near Potterspury, Northamptonshire.
Henry FitzRoy, 12th Duke of Grafton
Henry Oliver Charles FitzRoy, 12th Duke of Grafton( born 6 April 1978), known as Harry Grafton, is an English peer and music promoter.
He inherited the Dukedom of Grafton from his grandfather, Hugh FitzRoy, 11th Duke of Grafton, on 7 April 2011.
He is also a direct male- line descendant of Charles II of England.
Charles Gordon-Lennox, 7th Duke of Richmond
Charles Henry Gordon- Lennox, 7th Duke of Richmond and Lennox, 2nd Duke of Gordon,( 27 December 1845 – 18 January 1928), 7th Duke of Aubigny( French peerage in the French nobility), styled Lord Settrington until 1860 and Earl of March between 1860 and 1903, was a British politician and peer.
Anne FitzPatrick, Countess of Upper Ossory
Anne FitzPatrick, Countess of Upper Ossory( née Liddell, also known as Anne FitzRoy, Duchess of Grafton; c. 1737 – 1804) was an English noblewoman and the first wife of Augustus FitzRoy, 3rd Duke of Grafton.
Grafton divorced her while serving as Prime Minister.
She was a noted correspondent of Horace Walpole.
Publius Vitellius the Elder
__NoToC__ Publius Vitellius, grandfather of the emperor Vitellius, was a Roman eques who lived during the time of Augustus.
He was a procurator in the time of Augustus.

Question: Who is the paternal grandfather of Augustus Fitzroy, 7Th Duke Of Grafton?
Answer: George FitzRoy, 4th Duke of Grafton