Charles Fitzroy was born October 23, 1683.His parents were,  Henry FitzRoy, 1st Duke of Grafton and Isabella Bennet, 2nd Countess of Arlington.  He married Lady Henrietta Somerset, on 30 April 1713.
Charles Fitzroy, 2nd Duke of Grafton and Lady Henrietta Somerset had the following children
Charles Henry Fitzroy, Earl of Euston b. 13 Apr 1714, d. 18 Dec 1715
George Fitzroy, Earl of Euston b. 24 Aug 1715, d. 7 Jul 1747
Captain Lord Augustus Fitzroy b. 16 Oct 1716, d. 24 May 1741
Lord Charles Fitzroy b. 23 Apr 1718, d. 29 Jul 1739
Lady Caroline Fitzroy b. 8 Apr 1722, d. 26 Jun 1784
Lady Harriet Fitzroy b. 8 Jun 1723, d. c Aug 1735
Lady Isabella Fitzroy b. 1726, d. 10 Nov 1782
Illegitimate  son of Charles Fitzroy, 2nd Duke of Grafton
Charles Fitzroy-Scudamore b. 1707, d. 19 Aug 1782
He succeeded to the title of 2nd Baron Sudbury of Sudbury, Suffolk on 9 October 1690.
He succeeded to the title of 2nd Duke of Grafton,Northampton on 9 October 1690.
He held the office of Lord-Lieutenant of Suffolk between 1705 and 1757.
He held the office of Lord of the Bedchamber between 1714 and 1717.
He was invested as a Privy Counsellor in 1715.
He was invested as a Knight, Order of the Garter in 1721.
He succeeded to the title of 3rd Baron Arlington, of Arlington, Middlesex on 7 February 1722-23.
He succeeded to the title of 3rd Viscount Thetford, Norfolk on 7 February 1722-23.
He held the office of Lord Chamberlain between 1724 and 1757
He was Lord High Steward at King George I's coronation.
He also served as Lord Lieutenant of Ireland from 1720 to 1724
THE NEW YORK PUBLIC LIBRARY ARCHIVES & MANUSCRIPTS, Charles Fitzroy, 2nd Duke of Grafton manuscript material, Call number Pforz Ms, Charles Fitzroy, 2nd Duke of Grafton manuscript material : 1 item, Carl H. Pforzheimer Collection of Shelley and His Circle, The New York Public Library, Repository Carl H. Pforzheimer Collection of Shelley and His Circle; Charles Fitzroy, 2nd Duke of Grafton, British courtier and politician. · Holograph list of nine peers : no date : (MISC 0547) : including, "ye Duke of Montrose, ye Duke of Bridgwater [sic], ye Earle of Scarborough, my Lord Townshend, Lord Onslow, Lord Delawar [sic], Sr. John [Jennings?], Sr. Charles Bager, Sr. Adolphus [Guton?]." Signed "Grafton.".
It may be possible to confirm family relationships with Charles by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
Y-chromosome DNA test-takers in his direct paternal line on WikiTree: