Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Xiqi
Xiqi (665–651 BC) was briefly the ruler of the State of Jin during the Spring and Autumn period of ancient China.
He was the son of Duke Xian of Jin and his favored concubine Li Ji, and later replaced his older half-brother Shensheng as crown prince.
After the death of Duke Xian, he ascended the throne for about a month before being killed by Li Ke.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
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.
Duke Xian of Jin
Duke Xian of Jin (died 651 BC), ancestral name Ji (姬), given name Guizhu (詭諸), was the nineteenth ruler of the State of Jin.
He was also the ninth ruler of Jin in the Spring and Autumn period and the second duke of Jin.
When his father, Duke Wu of Jin, died in 677 BC, Guizhu ascended the throne of Jin and became Duke Xian of Jin.
He reigned for 26 years.
He moved the capital from Quwo (曲沃) to Jiang (絳).
He was named after a Rongdi tribe (戎狄族) leader Guizhu (詭諸) whom his father, Duke Wu of Jin, captured alive.
During his reign, the State of Jin was one of the most powerful and largest states due to his conquests in many small neighboring states.
He is also renowned for the slaughter and exile of many royal family members of Jin and for favoring one of his concubines named Li Ji.
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
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.
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.

Question: Who is Xiqi's paternal grandfather?
Answer: Duke Wu of Jin