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.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Yaroslav the Wise
Yaroslav I, Grand Prince of Rus, known as Yaroslav the Wise or Iaroslav the Wise (c. 978 – 20 February 1054) was thrice grand prince of Veliky Novgorod and Kiev, uniting the two principalities for a time under his rule.
Yaroslav's Christian name was George (Yuri) after Saint George ("Gjurĭgì").
A son of Vladimir the Great, the first Christian Prince of Kiev, Yaroslav acted as vice-regent of Novgorod at the time of his father's death in 1015.
Subsequently, his eldest surviving brother, Sviatopolk I of Kiev, killed three of his other brothers and seized power in Kiev.
Yaroslav, with the active support of the Novgorodians and the help of Varangian mercenaries, defeated Svyatopolk and became the Grand Prince of Kiev in 1019.
Under Yaroslav the codification of legal customs and princely enactments had begun, and this work served as the basis for a law code called the "Russkaya PravdaRus Truth [Law]").
During his lengthy reign, Kievan Rus' reached the zenith of its cultural flowering and military power.
Igor Yaroslavich
Igor Yaroslavich was one of the younger sons of Yaroslav the Wise from the Rurikid dynasty of Kievan Rus’.
He was baptized as George.
The date of his birth is unsure.
Some historians consider him to be born in 1034–35, while others think that he was born after Yaroslav moved to Kiev in 1036.
Upon the death of his father Iziaslav I of Kiev who was the eldest at that time appointed him as the Prince of Volyn.
When another of his brother Vyacheslav has died under unknown circumstances, Igor was transferred to Smolensk.
Around that time Rostislav of Tmutarakan was given his former realm to govern.
Like his other brother Vyacheslav, Igor died young when he was only 24, leaving behind two children Davyd and Vsevolod.
Igor was married to a countess of Orlamünde; the wedding with whom was conducting while Yaroslav the Wise was still alive.
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.
Guillaume Wittouck
Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.
He was the Grandfather of industrialist Paul Wittouck.
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.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Fyodor Stravinsky
Fyodor Ignatievich Stravinsky,, in Golovintsy, Minsk Governorate) was a Russian bass opera singer and actor of Polish descent.
He was the father of Igor Stravinsky and the grandfather of Théodore Strawinsky and Soulima Stravinsky.

Question: Who is the paternal grandfather of Igor Yaroslavich?
Answer: Vladimir the Great