Henry Beaufort, 2nd Earl of Somerset
Henry Beaufort, 2nd Earl of Somerset(" probably" 26 November 1401 – 25 November 1418) was the eldest son of John Beaufort, 1st Earl of Somerset, and the grandson of John of Gaunt, 1st Duke of Lancaster and Katherine Swynford.
Henry succeeded his father as Earl of Somerset on 16 March 1410.
During his minority, his mother, Margaret Beaufort, Countess of Somerset held his lands for him until he reached the age of 15.
When Henry was seventeen, he was placed under the command of Thomas Beaufort, Duke of Exeter, his uncle, at the Siege of Rouen during the Hundred Years'
War where he, as well as a number of other nobles, met his demise, although the exact reasons of his death are unknown.
He never married and was succeeded by his younger brother, John Beaufort, 1st Duke of Somerset.
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.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Eleanor Beauchamp, Duchess of Somerset
Lady Eleanor Beauchamp, Baroness de Ros and Duchess of Somerset (September 1408 – 6 March 1467) at Wedgenock, Warwickshire, England, was the second daughter of Richard de Beauchamp, 13th Earl of Warwick and Elizabeth de Berkeley, daughter of Thomas de Berkeley, 5th Baron Berkeley.
John Beaufort, 1st Duke of Somerset
John Beaufort, 1st Duke of Somerset( c. 1403 – 27 May 1444) was an English nobleman and military commander during the Hundred Years' War.
John Beaufort, Marquess of Dorset
John Beaufort, Marquess of Dorset, Earl of Dorset (b. 1441 – d. 4 May 1471) was a scion of the Beaufort family, who fought for the Lancastrians in the Wars of the Roses.
He was the third son of Edmund Beaufort, 2nd Duke of Somerset and his wife, Lady Eleanor Beauchamp, daughter of Richard de Beauchamp, Earl of Warwick.
When his eldest brother, Henry Beaufort, 3rd Duke of Somerset, was killed fighting for Lancaster in 1464 at the Battle of Hexham, the next brother, Edmund, succeeded to the Dukedom, and John became "Marquess of Dorset" and "Earl of Dorset", courtesy titles granted to the Beaufort heir-apparent or heir-presumptive.
These titles were not recognized by King Edward IV, of the House of York.
John had been in exile since 1461, first in Burgundy
and then France.
When Henry VI of Lancaster reclaimed the throne in October 1470, John returned with his brother Edmund.
But a few months later, Henry was driven from the throne again, and the Lancastrians were on the run.
John was killed in the Battle of Tewkesbury on 4 May 1471, while fighting beside Edmund, who was captured and beheaded two days later.
John left behind no issue and was never married.
With the death of John and Edmund, the legitimate male line of the Beauforts ended.
John Christian Kunkel
John Christian Kunkel (September 18, 1816 – October 14, 1870) was a Whig and Republican member of the U.S. House of Representatives from Pennsylvania.
He was the grandfather of John Crain Kunkel.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
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.

Question: Who is John Beaufort, Marquess Of Dorset's maternal grandfather?
Answer: Richard de Beauchamp, 13th Earl of Warwick