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.
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.
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.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Sophie Piper
Eva Sophie Piper, née Eva Sophie von Fersen (30 March 1757 – 2 February 1816, Löfstad Slott), was a Swedish countess and lady in waiting.
She was the daughter of count Axel von Fersen the Elder and Hedvig Catharina von Fersen and the sister of Axel von Fersen the Younger, Hedvig Eleonora von Fersen and Fabian von Fersen (1762–1818).
She is foremost known for her close friendship with Queen Hedvig Elizabeth Charlotte, who dedicated her famous diary to her.
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.
Felice Jankell
Felice Jankell is a Swedish actress.
She is known for playing the lead role of" Sophie" in the movie.
Hedvig Catharina von Fersen
Hedvig Catharina von Fersen, née De la Gardie (Stockholm, 20 May 1732–Stockholm, 24 April 1800) was a Swedish noble.
She was the daughter of the General and "riksråd" count Magnus Julius De la Gardie and the political salonist Hedvig Catharina Lilje, and sister of scientist Eva Ekeblad.
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

Question: Who is Sophie Piper's maternal grandfather?
Answer: Magnus Julius De la Gardie