Prithvipati Shah
Prithvipati Shah( ?–1716) was the king of the Gorkha Kingdom in the Indian subcontinent, present- day Nepal.
He was the grandfather of Nara Bhupal Shah.
Henry Bryant (naturalist)
Henry Bryant( May 12, 1820 – February 2, 1867) was an American physician and naturalist.
He was the grandfather of Henry Bryant Bigelow.
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 Nagara
, also known as Fujiwara no Nagayoshi, was a Japanese statesman, courtier and politician of the early Heian period.
He was the grandfather of Emperor Yōzei.
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).
Guillaume Wittouck
Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.
He was the Grandfather of industrialist Paul Wittouck.
Sima Zhao
Sima Zhao  (211 – 6 September 265), courtesy name Zishang, was a military general, politician, and regent of the state of Cao Wei during the Three Kingdoms period of China.
Sima Zhao capably maintained control of Wei, which had been seized by his father Sima Yi and previously maintained by his older brother Sima Shi, successfully crushing all internal opposition in the form of dissent and rebellion.
In 263, despite opposition, he decided to take advantage of the present weakness in Shu Han to the west and launched an invasion against it, which eventually managed to convince its emperor, Liu Shan, towards formally surrendering, tipping the decades-long established balance of power decisively in Wei's favor.
Towards the end of the campaign, he had himself created the Duke of Jin and accepted the Nine bestowments—a step that put him closer to usurpation of the throne—although he never actually ascended the throne, having further styled himself the King of Jin in 264, and then died in 265.
His military credit and successful grip on the political scene helped to set up the plot of overthrowing Wei by his son, Sima Yan, who usurped the Wei throne and proclaimed the Jin dynasty with himself as its emperor in 266.
After the establishment of Jin, Sima Yan posthumously honoured his father as Emperor Wen of Jin (晉文帝), with the temple name of Taizu (太祖).
A Chinese idiom involving and inspired by Sima Zhao states that "Everyone on the street knows what's in Sima Zhao's mind" (司馬昭之心, 路人皆知), meaning that a person's supposed hidden intention (in this case, usurping the throne) is so well known that it is not really hidden.
It came from a quote by Cao Mao, fourth emperor of Wei, who launched an unsuccessful uprising against Sima Zhao in an attempt to take back imperial power.
Sima You
Sima You (248–283), courtesy name Dayou, was an imperial prince of the Jin dynasty (265–420) of China.
He was the second son of Sima Zhao, a regent of the Cao Wei state during the Three Kingdoms period.
Sima You became the heir to his uncle, Sima Shi, who at the time was sonless.
It is known that Sima You was a person of mild-mannered character who was expected to be appointed emperor, but ended being passed over due to that of his young age.
The heir that was chosen was Sima Zhao's first son, Sima Yan
(Emperor Wu), who usurped the Cao Wei throne and established the Jin dynasty with himself as the new emperor in 265.
When Emperor Wu appointed his developmentally disabled son heir apparent, he was concerned that his subjects viewed Sima You too favourably.
In order to strengthen his son's position, he ordered Sima You away from Luoyang in 282 to a vassal state, despite protestations from their sisters, Princess Jingzhao and Princess Changshan.
Sima You fell ill from the stress and died soon after at the age of 36 (by East Asian age reckoning).
Sima
You's son, Sima Jiong, was one of the eight princes involved in the War of the Eight Princes during the reign of Emperor Hui, the second emperor of the Jin dynasty.

Question: Who is Sima You's paternal grandfather?
Answer: Sima Yi