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.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Khafra
Khafra (also read as Khafre, Khefren and Chephren) was an ancient Egyptian king (pharaoh) of the 4th Dynasty during the Old Kingdom.
He was the son of Khufu and the throne successor of Djedefre.
According to the ancient historian Manetho, Khafra was followed by king Bikheris, but according to archaeological evidence he was instead followed by king Menkaure.
Khafra was the builder of the second largest pyramid of Giza.
The view held by modern Egyptology at large continues to be that the Great Sphinx was built in approximately 2500 BC for Khafra.
Not much is known about Khafra, except from the historical reports of Herodotus, writing 2,000 years after his life, who describes him as a cruel and heretical ruler who kept the Egyptian temples closed after Khufu had sealed them.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
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.
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.
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
Iunmin I
Iunmin (also written as Yunmin, Iuenmin, Minuen) was a vizier from the Fourth dynasty of Egypt.
He was possibly a son of king Khafre.
He served as vizier towards the end of the dynasty, possibly during the reign of his brother Menkaure.

Question: Who is Iunmin I's paternal grandfather?
Answer: Khufu