Dudley Stanhope, 9th Earl of Harrington
Dudley Henry Eden Stanhope, 9th Earl of Harrington (13 January 1859 – 13 November 1928) was a British peer.
He was the son of Charles Stanhope, 7th Earl of Harrington, and Elizabeth Still de Pearsall.
He succeeded in the earldom on the death of his childless brother Charles on 5 February 1917.
William Stanhope, Viscount Petersham
William Stanhope, Viscount Petersham( William Henry Leicester; born 14 October 1967) is the son of Charles Stanhope, 12th Earl of Harrington and his first wife, Virginia Freeman- Jackson.
He is the heir apparent to his father's Earldom of Harrington.
Charles Stanhope, 3rd Earl of Harrington
General Charles Stanhope, 3rd Earl of Harrington( 17 March 17535 September 1829), styled Viscount Petersham until 1779, was a British Army officer and politician who sat in the House of Commons between 1774 and 1779 when he succeeded to the peerage as Earl of Harrington.
Anita Stanhope, Countess of Harrington
Anita Stanhope, Countess of Harrington( née Fuglesang; previously Howard; born 1950) is a British peeress.
She is the second wife of Charles Stanhope, 12th Earl of Harrington, and was previously the second wife of Michael Howard, 21st Earl of Suffolk.
Charles Stanhope, 10th Earl of Harrington
Charles Joseph Leicester Stanhope, 10th Earl of Harrington DL, MC (9 October 1887 – 16 November 1929) was a British captain and peer.
He was the son of Dudley Stanhope, 9th Earl of Harrington and Kathleen Wood.
He succeeded in the earldom on the death of his father on 13 November 1928.
Harrington was a captain in the 15th Hussars, Reserve of Officers and was awarded the Military Cross.
He also served as a Deputy Lieutenant of Derbyshire.
Edwyn Scudamore-Stanhope, 10th Earl of Chesterfield
Edwyn Francis Scudamore- Stanhope, 10th Earl of Chesterfield( 15 March 1854 – 24 January 1933), styled Lord Stanhope between 1883 and 1887, was a British peer and courtier.
Leicester Stanhope, 5th Earl of Harrington
Leicester FitzGerald Charles Stanhope, 5th Earl of Harrington CB( 2 September 17847 September 1862), styled The Honourable Leicester Stanhope until 1851, was an English peer and soldier.
Charles Stanhope, 12th Earl of Harrington
Charles Henry Leicester Stanhope, 12th Earl of Harrington( born 20 July 1945), styled as Viscount Petersham from birth until his father's death in 2009, is the son of William Stanhope, 11th Earl of Harrington, and his wife, Eileen Grey.
John Talbot, 10th Earl of Shrewsbury
John Talbot, 10th Earl of Shrewsbury, 10th Earl of Waterford( 1601 – 8 February 1654), was an English nobleman.
Charles Stanhope, 7th Earl of Harrington
Charles Wyndham Stanhope, 7th Earl of Harrington( 16 August 1809 – 26 May 1881) was an English peer.
Charles was the son of the Rev. Hon. Fitzroy Henry Richard Stanhope( 24 Apr 1787 – 11 Apr 1864), son of Charles Stanhope, 3rd Earl of Harrington, and Caroline Wyndham( d. 11 Feb 1876), illegitimate daughter of Hon. Charles Wyndham.
Charles inherited his titles in 1866, following the death of his childless 1st cousin, Sydney Seymour Hyde Stanhope, 6th Earl of Harrington.
Lord Harrington died 26 June 1881 and was succeeded by his son: Charles Stanhope, 8th Earl of Harrington

Question: Who is the paternal grandmother of Charles Stanhope, 10Th Earl Of Harrington?
Answer: Elizabeth Still de Pearsall