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.
Princess Shōshi (1027–1105)
, also known as , was an empress consort of Japan.
She was the consort of her cousin Emperor Go-Reizei.
She was the eldest daughter of Emperor Go-Ichijō and Fujiwara no Ishi, and the sister of Princess Kaoruko.
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.
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.
Fujiwara no Ishi
Fujiwara no "Ishi" (藤原威子) (999–1036) was the Empress consort of Emperor Go-Ichijō of Japan.
She was the third daughter of Fujiwara no Michinaga.
In 1018, at the age of nineteen, she married her ten-year-old nephew the Emperor and became Empress ("Chugu"), and thus the third of her sisters to become Empresses in succession, all in marriages arranged by their father the regent.
On September 4th, the same year of Emperor Go-Ichijō's passing, she took tonsure as a Buddhist nun.
She died two days later at the age of 38.
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.
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).
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.

Question: Who is Princess Shōshi (1027–1105)'s maternal grandfather?
Answer: Fujiwara no Michinaga