Henry Wentworth
Sir Henry Wentworth of Nettlestead, Suffolk, KB( born c. 1448 – died between 17 August 1499 and 27 February 1501)," de jure" 4th Baron le Despencer, was the grandfather of Henry VIII's third wife, Jane Seymour, and the great- grandfather of Jane's son, Edward VI.
Henry X Rumpold
Henry X Rumpold, Duke of Żagań also known as the Younger (b. ca. 1390 – d. 18 January 1423), was a Duke of Żagań-Głogów during 1397-1412 (as co-ruler of his brothers) and since 1412 ruler over Głogów (as co-ruler of his brother).
He was the third son of Henry VIII the Sparrow, Duke of Głogów by his wife Katharina, daughter of Duke Władysław of Opole.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
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.
Fred Le Deux
Frederick" Fred" Le Deux( born 4 December 1934) was an Australian rules footballer who played with Geelong in the Victorian Football League( VFL).
He is the grandfather of Tom Hawkins.
Henry Krause
Henry J." Red" Krause, Jr.( August 28, 1913 – February 20, 1987) was an American football offensive lineman in the National Football League for the Brooklyn Dodgers and the Washington Redskins.
He played college football at St. Louis University.
He is the grandfather of Jennifer Krause
He is the great grandfather of Payton Hoeing
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Henry VIII the Sparrow
Henry VIII (VI)
the Sparrow
(– 14 March 1397) was a Duke of Żagań–Głogów during 1368–1378 (as a co-ruler with his brothers), from 1378 ruler over Zielona Góra, Szprotawa, Kożuchów, Przemków and Sulechów, and since 1395 ruler over half of Głogów, Ścinawa and Bytom Odrzański.
He was the second son of Henry V of Iron, Duke of Żagań–Głogów, by his wife Anna, daughter of Duke Wenceslaus of Płock.
The origin of his nickname "SparrowWróbel") is unknown.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Henry Bryant (naturalist)
Henry Bryant( May 12, 1820 – February 2, 1867) was an American physician and naturalist.
He was the grandfather of Henry Bryant Bigelow.

Question: Who is Henry X Rumpold's paternal grandfather?
Answer: Henry V of Iron