Katherine de la Pole
Katherine de la Pole (1410/11 – 1473) was the oldest daughter of Michael de la Pole, 2nd Earl of Suffolk and Katherine de Stafford.
She became abbess of Barking Abbey in January 1433.
In this capacity, between 1437 and 1440, she took care of Edmund and Jasper Tudor, the two eldest sons of Catherine of Valois (widowed queen of King Henry V of England) by her second husband Owen Tudor.
Katherine persuaded King Henry VI to take an interest in the boys, who were his half-brothers.
Henry later ennobled them, thereby taking one of the important steps that would later enable Edmund's son Henry Tudor to claim the English throne.
Edmund's wife Lady Margaret Beaufort, mother of Henry Tudor, had been a ward of Katherine's brother, William de la Pole, steward of the royal household.
Robert de Stafford
Robert de Stafford( known also as Robert of Tosny and Robert de Toeni)( 1039 – c. 1100) was a Norman nobleman, the builder of Stafford Castle in England.
He is generally said to have been a son of Roger I of Tosny; primary evidence is lacking to determine his parentage, according to Cawley.
Cawley notes that Robert de Stafford is connected to the Tosny family through a charter( not dated) under which" Robertus de Stafford" confirmed donations to Wotton Wawen Abbey, Warwickshire by" avus meus Robertus de Toenio et pater meus Nicolaus de Stafford."
Also" Robertus de Staffordia et Robertus filius meus et hæres" confirmed donations of property to Evesham Monastery by" Rodbertus avus meus ... et pater meus Nicholaus" by undated charter.
He held a large number of lordships in the Domesday Survey, a high proportion lying in Staffordshire.
They included Barlaston and Bradley in Staffordshire and part of Duns Tew in Oxfordshire.
Robert de Stafford was buried in Evesham Abbey.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
John Sutton III
Sir John de Sutton III( 1339 – c. 1370) was the 2nd Baron Sutton of Dudley and heir of Dudley Castle.
He was the son of Sir John de Sutton II, the first Lord of Dudley, and Isabella de Cherleton.
John III married twice, with the first on 25 December 1357 to Katherine de Stafford( 1340/ 8 – December 1361), daughter of Ralph de Stafford, 1st Earl of Stafford and Margaret de Audley, 2nd Baroness Audley.
After 1361, he married secondly to Joan, daughter of Sir John de Clinton of Coleshill.
By Katherine, Sir John de Sutton IV became successor.
Edmund Stafford, 1st Baron Stafford
Edmund de Stafford, 1st Baron Stafford was the son of Nicholas de Stafford, who was summoned to parliament by writ on 6 February 1299 by King Edward I.
Kaya Alp
Kaya Alp was, according to Ottoman tradition, the son of Kızıl Buğa and the father of Suleyman Shah, who was, in turn, the grandfather of Ertuğrul, and the great grandfather of the Ottoman Empire founder, Osman I.
Katherine de Stafford
Katherine de Stafford, Countess of Suffolk (born around 1376 – 8 April 1419) was a daughter of Hugh de Stafford, 2nd Earl of Stafford and his wife Philippa de Beauchamp.
By her marriage to Michael de la Pole, 2nd Earl of Suffolk, she became known as the Countess of Suffolk.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
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.
Katherine Hoskins
Katherine de Montalant Hoskins( May 25, 1909 – May 26, 1988) was an American poet, short story writer, and playwright.

Question: Who is Katherine De Stafford's maternal grandfather?