Frederick William Cadogan
Frederick William Cadogan DL, JP (16 December 1821 – 30 November 1904), styled The Honourable from 1831, was a British barrister and Liberal politician.
He was the fourth son of George Cadogan, 3rd Earl Cadogan and his wife Honoria Louisa Blake, daughter of Joseph Blake and sister of Joseph Blake, 1st Baron Wallscourt.
Cadogan was educated at Westminster School and then at Oriel College, Oxford.
He was called to the bar by the Inner Temple in 1847 and practised in the Northern Circuit.
Having unsuccessfully stood for Bridgnorth in 1852 and for Stafford five years later, Cadogan entered the British House of Commons in 1868, sitting as Member of Parliament (MP) for Cricklade until 1874.
He was a Deputy Lieutenant for Middlesex and represented the same county as well as Westminster as a Justice of the Peace.
On 29 November 1851, Cadogan married Lady Adelaide Paget, eight daughter of Henry Paget, 1st Marquess of Anglesey.
They had three daughters and a son.
George Mason II
George Mason II( 1660 – 1716) was an early American planter and statesman.
Mason was the grandfather of George Mason IV, a Founding Father of the United States.
Ralph Neville, 3rd Earl of Westmorland
Ralph Neville, 3rd Earl of Westmorland( c. 1456 – 6 February 1499) was an English peer.
He was the grandfather of Ralph Neville, 4th Earl of Westmorland.
John Cadogan
Sir John Ivan George Cadogan( born 8 October 1930) is a British organic chemist.
George Cadogan Morgan
George Cadogan Morgan (1754 - 17 November 1798) was a British dissenting minister and scientist.
Gerald Cadogan, 6th Earl Cadogan
Gerald Oakley Cadogan, 6th Earl Cadogan, CBE, DL( 28 May 1869 – 4 October 1933) was a British Peer and professional soldier.
He was the son of George Henry Cadogan, 5th Earl Cadogan and inherited his titles on 6 March 1915 on the death of his father, two elder brothers having died without male heirs.
He married Lilian Eleanor Marie Coxon, daughter of George Stewart Coxon, on 7 June 1911 at Christ Church, Mayfair, London.
They had three children, the eldest son of whom was his heir William Gerald Charles Cadogan, 7th Earl Cadogan.
He joined the Army as a lieutenant in the Life Guards, but received a staff appointment as Aide- de- Camp( ADC) to his father when the latter became Lord Lieutenant of Ireland in 1895.
Cadogan continued as an Extra- ADC to Lord Dudley, who became Lord Lieutenant in August 1902, but resigned with him in 1905.
In July 1897 he was appointed a captain in the 3rd( Militia) Battalion of the Suffolk Regiment.
In early January 1900 he was selected for duty as a special service officer in South Africa during the Second Boer War, and he left Southampton early the following month on board the SS" Canada".
He later served with the South African Constabulary under the Military Governor of Pretoria, and returned to London in January 1902.
He was made a Commander of the Order of the British Empire( CBE) in 1919 and became Deputy Lieutenant( DL) of Suffolk.
He was awarded the rank of Honorary Lieutenant- Colonel in the Suffolk Volunteer Regiment of the Volunteer Training Corps.
He was a member of the International Olympic Committee from 1922 to 1929.
In that role he is portrayed, by actor Patrick Magee, in the 1981 historical film drama" Chariots of Fire" as urging runner Eric Liddell to appear in an event where the Prince of Wales would be present that was on Sunday at the 1924 Summer Olympics in Paris.
On his death in 1933 aged 64 he was succeeded by his son William Gerald Charles Cadogan, 7th Earl Cadogan.
His wife remarried.
Culford Park, the family seat, was sold and is now a private school.
George Cadogan, 3rd Earl Cadogan
Admiral George Cadogan, 3rd Earl Cadogan, CB, KMT (5 May 1783 – 15 September 1864) was a British Royal Navy officer and politician of the mid-nineteenth century who first gained fame for his service in the Adriatic campaign of the Napoleonic Wars in command of .
Cadogan later served as aide-de-camp to successive British monarchs and received promotion to full admiral.
The son of Charles Cadogan, 3rd Baron Cadogan and his second wife Mary Churchill, Cadogan inherited his father's titles from his half brother Charles in 1832 and became the third Earl Cadogan.
He was also created 1st Baron Oakley of Caversham on 10 September 1831.
Later in life, Cadogan was elected to become a Fellow of the Society of Antiquaries of London and died in 1864.
Charles Cadogan, 2nd Earl Cadogan
Charles Henry Sloane Cadogan, 2nd Earl Cadogan( 29 November 1749 – 23 December 1832) was a British nobleman, styled Viscount Chelsea from 1800 to 1807.
The eldest child of Charles Cadogan, 3rd Baron Cadogan and Frances Bromley, he was baptised on 13 December 1749 at St George's, Hanover Square.
He became 2nd Earl Cadogan on the death of his father in 1807.
He served briefly in the British Army in his youth.
By the time he had inherited, he had already become a lunatic.
He died unmarried in Enfield and so his title passed to his half- brother George Cadogan, 3rd Earl Cadogan.
He was buried at Chelsea on 3 January 1833 and his will was probated in July that year.
George Cadogan
General The Hon. Sir George Cadogan
( 2 December 1814 – 27 January 1880) was a general in the British Army.
Charles Cadogan, 1st Earl Cadogan
Charles Sloane Cadogan, 1st Earl Cadogan (29 September 1728 – 3 April 1807) was a British peer and Whig politician.
Cadogan was the only son of Charles Cadogan, 2nd Baron Cadogan and his wife, Elizabeth, the second daughter of Sir Hans Sloane, Bart.
and was educated at Magdalen College, Oxford.
From 1749–54 and again from 1755, Cadogan was a Member of Parliament for Cambridge until he inherited his father's title in 1776.
He was also appointed Keeper of the Privy Purse to Prince Edward in 1756, Surveyor of the King's Gardens from 1764–69 and Master of the Mint from 1769–84.
In 1800, he was elevated in the Peerage as 1st Viscount Chelsea and 1st Earl Cadogan.
In 1777 he leased of the family estate in Chelsea to architect Henry Holland for building development.
Holland built Sloane Square, Sloane Street, Cadogan Place and Hans Place.

Question: Who is the paternal grandfather of George Cadogan, 3Rd Earl Cadogan?
Answer: Charles Cadogan, 2nd Baron Cadogan