Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
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.
John III of Sweden
John III (20 December 1537 – 17 November 1592) was King of Sweden from 1569 until his death.
He was the son of King Gustav I of Sweden and his second wife Margaret Leijonhufvud.
He was also, quite autonomously, the ruler of Finland, as "Duke John" from 1556 to 1563.
In 1581 he assumed also the title Grand Prince of Finland.
He attained the Swedish throne after a rebellion against his half-brother Eric XIV.
He is mainly remembered for his attempts to close the gap between the newly established Lutheran Church of Sweden and the Catholic church.
His first wife was Catherine Jagellonica of the Polish-Lithuanian ruling family, and their son Sigismund eventually ascended both the Polish-Lithuanian and Swedish thrones.
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.
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.
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
Lucretia Gyllenhielm
Lucretia Johansdotter Gyllenhielm (1561–1585), was the illegitimate daughter of John III of Sweden and Karin Hansdotter.
She was reportedly the favorite of her father.

Question: Who is Lucretia Gyllenhielm's paternal grandfather?
Answer: Gustav I of Sweden