John Mackay (poet)
John Mackay( 1656–1754), known as( The Blind Piper), was a Scottish Gaelic poet and composer, and the grandfather of William Ross.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
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
Suleyman Shah
Suleyman Shah (Modern) was, according to Ottoman tradition, the son of Kaya Alp and the father of Ertuğrul and Gündogdu, who was, in turn, the father of Osman I, the founder of the Ottoman Empire.
However, early Ottoman genealogies did not all agree on this lineage, some failing entirely to mention Suleyman Shah as one of Osman's ancestors.
The connection between Osman I and Suleyman Shah may have been invented at a later date.
His other son was Saru Yatı, the father of Bay Hodja.
It is said that Suleyman Shah drowned in the river Euphrates in Syria.
An Ottoman tomb in or near Qal'at Ja'bar has historically been associated with Suleyman Shah.
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.
Dündar Bey
Dündar Bey (around 1210 or 1211–1298) was the youngest son of Kayi Bey Suleyman Shah, younger brother of Ertuğrul and the uncle of Osman I.
He was the youngest son of Suleyman Shah and Hayme Hatun.
When his brother Ertuğrul died in 1281, the next leader of the Kayı tribe became Ertugrul's son Osman Bey, later known as the founder of the Ottoman Empire.
When Osman decided to attack a small Greek island, Dundar rebelled because he thought it would destroy the tribe.
However, Osman pulled out his sword and killed Dundar for disobeying.
There was many plots to kill Osman I. Dundar Bey knew about them but remained silent.
His greed on becoming the leader of the Kayi tribe got to him.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Zhao Shoushan
Zhao Shoushan( 12 November 1894 – 20 June 1965) was a KMT general and later Chinese Communist Party politician.
He is the grandfather of Zhao Leji.
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.

Question: Who is the paternal grandfather of Dündar Bey?
Answer: Kaya Alp