Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Yang Wenguang
Yang Wenguang( 楊文廣)( died 1074) was a general in ancient China's Northern Song Dynasty.
In history, Yang Wenguang was the son of Yang Yanzhao, however, he is the grandson of Yang Yanzhao in the popular fictionalized stories of Yang clan warriors.
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.
Tardu
Tardu or Tardush Yabghu was the second yabgu of Western Half of Turkic Khaganate (c. 575–603), and Ninth Khagan of the Turkic Khaganate (599–603).
He was the son of Istämi.
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
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Yangsu Tegin
Yangsu Tegin was a Gökturk prince.
Long thought to be a son of Tardu, however Takeshi Osawa indicated that he was a son of Muqan Qaghan and father of Niri Qaghan.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Yang Jun (martial artist)
Yang Jun was born in Taiyuan, Shanxi, China in 1968 into the famous Yang family of martial artists.
A son of Yang Dao Fang and a grandson of Yang Zhenduo, he is a direct descendant of Yang Cheng Fu and of Yang Lu Chan, the creator of Yang-style t'ai chi ch'uan.
Yang Jun is a sixth-generation descendant of the Yang Family of t'ai chi ch'uan, and is the fifth lineage-holder of the style.

Question: Who is Yangsu Tegin's paternal grandfather?
Answer: Istämi