Margaret Howard, Countess of Nottingham
Margaret Stuart (or Stewart) (– 4 August 1639), Scottish aristocrat and courtier in England.
She served as lady-in-waiting to the queen consort of England, Anne of Denmark.
She was the daughter of James Stewart, 2nd Earl of Moray, and Elizabeth Stuart, 2nd Countess of Moray.
The sailor and patron of Ben Jonson, Sir Frances Stuart was her brother.
James Howard, 3rd Earl of Suffolk
James Howard, 3rd Earl of Suffolk,( 10 February 1606 /16077 January 1688), was grandson of Thomas Howard, 1st Earl of Suffolk, and was also 3rd Baron Howard de Walden.
He was succeeded in the earldom, a revival of an earlier title held by distant ancestors and re-created for his grandfather Thomas Howard, by two of his brothers.
He acted as Earl Marshal for the coronation of Charles II.
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 Gordon, 3rd Earl of Aboyne
John Gordon, 3rd Earl of Aboyne( born April 1700, died 7 April 1732) was the son of Charles Gordon, 2nd Earl of Aboyne and Elizabeth Lyon.
He succeeded his father as 3rd Earl of Aboyne in April 1702.
On his death in 1732 he was succeeded in his titles by his eldest son.
Charles Howard, 3rd Earl of Nottingham
Charles Howard, 3rd Earl of Nottingham (25 December 1610 – 26 April 1681) was the son of Charles Howard, 1st Earl of Nottingham by his second wife, the former Margaret Stuart.
He studied at the University of Oxford, where he had a reputation for exceptional wildness, and he damaged his prospects by an impulsive love marriage to a barrister's daughter, a marriage which both families disapproved of.
He inherited the earldom following the death of his half-brother, Charles Howard, 2nd Earl of Nottingham.
He was married around 1627 to Arabella Smith, "a lady of surpassing beauty and charm", the daughter of Edward Smith, a barrister, and sister of Sir Edward Smith, Chief Justice of the Irish Common Pleas.
They had no children.
When he died, the Earldom of Nottingham became extinct, but the Barony was succeeded by Francis Howard, 5th Baron Howard of Effingham.
Gordon Howard, 5th Earl of Effingham
Gordon Frederick Henry Charles Howard, 5th Earl of Effingham( 18 May 1873 – 7 July 1946) was an English peer and member of the House of Lords.
The son of Hon. Frederick Charles Howard and grandson of Henry Howard, 2nd Earl of Effingham, he inherited the earldom in 1927 from his cousin, Henry Howard, 4th Earl of Effingham.
Gilbert Talbot, 3rd Baron Talbot
Gilbert Talbot, 3rd Baron Talbot( c. 1332–1387) was an English nobleman and soldier.
He was the grandfather of John Talbot, 1st Earl of Shrewsbury.
Daniel Finch, 8th Earl of Winchilsea
Daniel Finch, 8th Earl of Winchilsea and 3rd Earl of Nottingham,( 24 May 16892 August 1769) was a British politician.
Edward Howard, 8th Earl of Suffolk
Edward Howard, 8th Earl of Suffolk (1672 - 22 Jun 1731) was an English peer.
Edward Howard was the second son of Henry Howard, 5th Earl of Suffolk, and his wife Mary Stewart.
He was educated at Magdalene College, Cambridge.
He succeeded his nephew Charles Howard, 7th Earl of Suffolk in 1722.
He was succeeded by his younger brother Charles Howard, 9th Earl of Suffolk.
Charles Howard, 2nd Earl of Nottingham
Charles Howard, 2nd Earl of Nottingham( 17 September
1579 – 3 October 1642) of Effingham, Surrey was the second( but eldest surviving) son of Charles Howard, 1st Earl of Nottingham.
His mother was the former Catherine Carey.
From 1615 to 1624 he was styled Lord Howard of Effingham before he succeeding his father in the latter year as 2nd Earl of Nottingham.
He was a Member of Parliament five times between 1597 and 1614, for Bletchingley and for Surrey in 1597, for Sussex in 1601 and 1604 and for New Shoreham in the Addled Parliament of 1614.
He was knighted in 1603 and later appointed Vice- Admiral of Sussex for life.
He was married first on 19 May 1597 to Charity White( d. 18 December 1618), daughter to Robert White and secondly, on 22 April 1620, to Mary Cokayne, daughter of Sir William Cockayne, Lord Mayor of London in 1619.
There were no known children from either marriage and he was therefore succeeded by his half- brother, Charles Howard, 3rd Earl of Nottingham.
The senior school in Effingham, Surrey, the Howard of Effingham School, is named after him.

Question: Who is the maternal grandfather of Charles Howard, 3Rd Earl Of Nottingham?
Answer: James Stewart, 2nd Earl of Moray