Guillaume Wittouck
Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.
He was the Grandfather of industrialist Paul Wittouck.
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.
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.
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.
Vasilko Romanovich
Vasilko Romanovich (1203–1269), Prince of Belz (1207–1211), Prince of Brest (1221–1231), and Prince of Volhynia (1231–1269).
He was the son of Roman the Great, the younger brother of Daniel of Galicia.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Vladimir Vasilkovich
Volodymyr Vasylkovich (died 1289) was a son of Vasilko Romanovich, prince of Volhynia, now part of Ukraine.
He succeeded his father when the latter died in 1269, and was famous for numerous constructions and reconstructions of town fortifications in Volhynia.
In the 1270s (1276, according to most sources) he founded a castle that included a keep now famous as the Tower of Kamyanets, and around which sprang up the town of Kamyanets, now in Belarus; he also authored the construction of a similar tower in the re-built castle of Berestye (modern Brest, Belarus).
He died in 1289 in Luboml (or Liuboml), which is now in Ukraine.
Summing up his life, the "old chronicle" presented him as a booklover and philosopher, whose like in the world had never before been seen, and would never be seen again.
Vasilkovich was renowned for his favorable treatment of the region's Jewish population, which had erewhile been severely maligned and ill-treated.
According to an annalist who describes the funeral of the grand duke Vladimir Vasilkovich in the city of Vladimir (Volhynia), "the Jews wept at his funeral as at the fall of Jerusalem, or when being led into the Babylonian captivity."
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.

Question: Who is the paternal grandfather of Vladimir Vasilkovich?
Answer: Roman the Great