Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
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.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Giselbert I of Bergamo
Giselbert I of Bergamo( died c.927/929) was a northern Italian nobleman.
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.
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.
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
Gausfred I
Gausfred I (died 991) was the count of Empúries and Rosselló from 931 until his death.
He was the son and successor of Gausbert.
He spent his whole life consolidating his authority in his counties, but he divided the realm amongst his sons.
By his testament of 989, Empúries and Perelada went to Hugh and Roussillon went to Giselbert.
He married firstly Ava Guisla, probably the daughter of Raymond II, count of Rouergue.
By her he had:
He married secondly Sibylla, with whom he had no children.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Giselbert I of Roussillon
Giselbert
I  (died 1013 or 1014), count of Roussillon (991–1013), was the son of Gausfred I.
His father divided his lands between his sons, giving Ampurias to Hugh and Roussillon to Giselbert.
Though the patrimony was divided, both brothers continued to claim and annex territory belonging to the other and war was common, even among their descendants.
In 1013, Giselbert died and Hugh invaded his county.
It was not until 1020 that Hugh was repelled and Gausfred, Giselbert's son, definitively succeeded.
By marriage to Beliarda, he produced three sons:

Question: Who is the paternal grandfather of Giselbert I Of Roussillon?
Answer: Gausbert