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.
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 Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
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.
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.
Amadeus VII, Count of Savoy
Amadeus VII (March 1360, Chambéry – 1 November 1391), known as the Red Count, was Count of Savoy from 1383 to 1391.
Amadeus was the son of Amadeus VI, Count of Savoy and Bonne of Bourbon.
Amadeus VII was known for his hospitality, for he would entertain people of all stations and never turned a person from his table without a meal.
He married Bonne of Berry, daughter of John, Duke of Berry, who was the younger brother of Charles V of France.
They had three children:
Upon his death at age 29 from tetanus, controversy arose because of his will.
Amadeus VII left the important role of guardian of his son and heir, Amadeus VIII, to his own mother, a sister of the powerful Duke de Bourbon, instead of following the tradition of appointing the child's mother, who was a daughter of the equally powerful Duke de Berry.
It took three months of negotiations to restore peace in the family.
Amadeus VIII, Duke of Savoy
Amadeus VIII (4 September 1383 – 7 January 1451) was a Savoyard nobleman, the son of Amadeus VII, Count of Savoy and Bonne of Berry.
He was surnamed the Peaceful.
After the death of his father in 1391, his mother acted as a regent, because of his youth.
He was an antipope of the Catholic Church from 1439 to 1449 as Felix V, in opposition to Popes Eugene IV and Nicholas V.
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 Amadeus Viii, Duke Of Savoy?
Answer: Amadeus VI, Count of Savoy