Richard (III), bishop of Bayeux
Richard of Gloucester was a bishop of Bayeux in France.
Also called Richard Fitz Robert, he was the bastard son of Robert, 1st Earl of Gloucester, and Isabel of Dover, daughter of Samson of Worcester, Bishop of Worcester.
He was the nephew of Richard de Douvres, his predecessor at the bishopric of Bayeux.
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.
George Gordon, 15th Earl of Sutherland
George Gordon, 15th Earl of Sutherland (2 November 1633 – 4 March 1703) was a Scottish nobleman.
He was the eldest surviving son of John Gordon, 14th Earl of Sutherland, and his first wife Lady Jean Drummond, daughter of James Drummond, the 1st Earl of Perth.
On 11 Aug 1659 he married Lady Jean Wemyss, daughter of David Wemyss, 2nd Earl of Wemyss, and his first wife Anna Balfour.
His only son was John Gordon, 16th Earl of Sutherland.
He also had one daughter Anna who married Robert 2nd Viscount of Arbuthnott.
He is buried in Holyrood Abbey.
His ornate monument by James Smith stands on the north wall.
Gilbert Kennedy, 2nd Earl of Cassilis
Gilbert Kennedy, 2nd Earl of Cassillis( died between 24 and 30 August 1527) was a Scottish nobleman, the son of David Kennedy, 1st Earl of Cassilis and Agnes, daughter of William Borthwick, 3rd Lord Borthwick.
He was married to Lady Isabel Campbell, daughter of Archibald Campbell, 2nd Earl Argyll and Elizabeth Stewart.
Children of Gilbert Kennedy, 2nd Earl of Cassillis and Lady Isabel Campbell:
Maud de Lacy, Countess of Hertford and Gloucester
Maud de Lacy,( 25 January 1223 – 10 March 1289), was an English noblewoman, being the eldest child of John de Lacy, 2nd Earl of Lincoln, and the wife of Richard de Clare, 5th Earl of Hertford, 6th Earl of Gloucester.
Mabel FitzRobert, Countess of Gloucester
Mabel FitzRobert, Countess of Gloucester (c. 1100 – 29 September 1157) was an Anglo-Norman noblewoman, and a wealthy heiress who brought the lordship of Gloucester, among other prestigious honours to her husband, Robert, 1st Earl of Gloucester upon their marriage.
He was the illegitimate son of King Henry I of England.
Her father was Robert Fitzhamon, Lord of Gloucester and Glamorgan.
As she was the eldest daughter of four, and her younger sisters had become nuns, Mabel inherited all of his honours and properties upon his death in 1107.
As Countess of Gloucester, Mabel was significant politically and she exercised an important administrative role in the lordship.
Alexander Windsor, Earl of Ulster
Major Alexander Patrick Gregers Richard Windsor, Earl of Ulster( born 24 October 1974) is a former British Army officer.
He is the only son of Prince Richard, Duke of Gloucester, and Birgitte, Duchess of Gloucester.
As heir apparent to the dukedom of Gloucester, he is accorded the courtesy title Earl of Ulster, but is commonly known as Alex Ulster.
Thomas Bruce, 2nd Earl of Ailesbury
Thomas Bruce, 2nd Earl of Ailesbury( later styled Aylesbury) and 3rd Earl of Elgin( 1656 – 16 December 1741) was an English politician and memoirist.
He was the son of Robert Bruce, 2nd Earl of Elgin, and Lady Diana Grey.
His maternal grandparents were Henry Grey, 1st Earl of Stamford, and Lady Anne Cecil, daughter of William Cecil, 2nd Earl of Exeter.
His" Memoirs", which were not published until long after his death, are a valuable source for English history in the last quarter of the seventeenth century.
William Fitz Robert, 2nd Earl of Gloucester
William Fitz Robert, 2nd Earl of Gloucester (23 November 1116 – 23 November 1183) was the son and heir of Sir Robert de Caen, 1st Earl of Gloucester, and Mabel FitzRobert of Gloucester, daughter of Robert Fitzhamon and nephew of Empress Matilda.
William fitz Robert Barry
William fitz Robert Barry( fl. 1615), Irish harper.
His full name was William fitz Robert fitz Edmond Barry, that is, William son of Robert son of Edmond Barry.
He was a blind harper in the service of David de Barry, 5th Viscount Buttevant( died 1617), the same person who" had been commissioned by Queen Elizabeth to exterminate the harpers."

Question: What is the date of death of William Fitz Robert, 2Nd Earl Of Gloucester's mother?
Answer: 29 September 1157