Thomas Stafford, 3rd Earl of Stafford
Thomas Stafford, 3rd Earl of Stafford (c. 1368–4 July 1392) was the second son—but the senior surviving heir—of Hugh Stafford, 2nd Earl of Stafford and Philippa de Beauchamp, daughter of Thomas de Beauchamp, 11th Earl of Warwick.
His elder brother, his father's heir, Sir Ralph Stafford, was murdered by Richard II's half-brother, the earl of Huntingdon whilst they were campaigning in Scotland in July 1385.
As a result, Thomas became heir to the earldom of Stafford, and in 1390 he was knighted.
He gained livery of his estates in 1391 and paid homage to the king for them on 20 October that year.
He spent his short career campaigning in France alongside the duke of Gloucester.
Thomas Stafford married Anne, daughter of Thomas, Duke of Gloucester around 1390.
He died on 4 July 1392 in Westminster, and was interred in Stone, with his father; his widow, Anne, with whom he had had no children, married his youngest brother Edmund Stafford, 5th Earl of Stafford.
Susanna Leveson-Gower, Marchioness of Stafford
Susanna Leveson- Gower, Marchioness of Stafford( née Lady Susanna Stewart)( 1742 – 1805), styled Lady Susanna Stewart from 1742 to 1768, Countess Gower until 1786, Marchioness of Stafford until 1803 and Dowager Marchioness of Stafford until her death in 1805, was a British noblewoman, who in 1768 became the wife of Granville Leveson- Gower, 1st Marquess of Stafford and a member of the Leveson- Gower family.
William Graham, 3rd Earl of Menteith
William Graham, 3rd Earl of Menteith( c. 1500 – c. 1543) was a Scottish magnate and third Earl of Menteith.
Philippa de Beauchamp
Philippa de Beauchamp (before 1344-6 April 1386) was the daughter of Thomas de Beauchamp, 11th Earl of Warwick and Katherine Mortimer.
On or before 1 March 1350 she married Hugh de Stafford, 2nd Earl of Stafford, son of Ralph de Stafford,
1st Earl of Stafford and Margaret Audley, Baroness Audley.
Philippa and Hugh had seven children.
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.
Edmund Mortimer, 3rd Earl of March
Edmund de Mortimer, 3rd Earl of March and" jure uxoris" Earl of Ulster( 1 February 135227 December 1381) was son of Roger Mortimer, 2nd Earl of March, by his wife Philippa, daughter of William Montagu, 1st Earl of Salisbury and Catherine Grandison.
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.
Theodred II (Bishop of Elmham)
Theodred II was a medieval Bishop of Elmham.
The date of Theodred's consecration unknown, but the date of his death was sometime between 995 and 997.
James Lindsay, 5th Earl of Balcarres
James Lindsay, 5th Earl of Balcarres( 14 November 1691 – 20 February 1768) was a Scottish peer, the son of Colin Lindsay, 3rd Earl of Balcarres and Lady Margaret Campbell, daughter of the Earl of Loudoun.
He became the 5th Earl of Balcarres on 25 July 1736 on the death of his brother Alexander Lindsay, 4th Earl of Balcarres.
John Lindsay, 19th Earl of Crawford
John Lindsay, 19th Earl of Crawford and 3rd Earl of Lindsay( died December 1713) was a Scottish peer and politician.

Question: When did Thomas Stafford, 3Rd Earl Of Stafford's mother die?
Answer: 6 April 1386