Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Vladimir IV Rurikovich
Vladimir IV Rurikovich  (1187 – March 3, 1239), Prince of Pereyaslavl (1206–1213), Smolensk (1213–1219) and Grand Prince of Kiev (1223–1235).
Son of Rurik Rostislavich.
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.
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.
Rurik Rostislavich
Rurik Rostislavich (Russian and Ukrainian:
Рюрик Ростиславич)
(?–1215)
, Prince of Novgorod (1170–1171), Belgorod Kievsky, presently Bilohorodka (1173–1194), Grand Prince of Kiev (1173, 1180–1182, 1194–1202, 1203–1205, 1206, 1207–1210), Prince of Chernigov (1210–1214).
Rurik was the son of Rostislav I of Kiev, and succession conflicts placed Rurik on the throne of the Kievan Rus' no less than seven times.
In 1182, he became co-ruler with Sviatoslav III of Kiev, an arrangement that lasted until Sviatoslav's death in 1194.
Rurik ruled alone until 1199, when his rule was challenged by Roman the Great, who deposed Rurik.
After a brief stint in Chernihiv, where he built the Church of St. Paraskebas, Rurik, along with his kinsmen and a Cuman army, attacked and sacked Kiev in 1203, but was repelled until Roman's death in 1205.
Rurik had been confined to a monastery in 1204, but he abandoned his holy vows and returned to the throne.
His cousin, Vsevolod, felt that Rurik's previous monastic vows rendered his authority invalid, and so attacked and briefly seized Kiev in 1206, 1207, and 1211.
He succeeded in capturing Rurik, who died in captivity in Chernigov.
Rurik was married to Anna of Turov; among their children was Rostislav II of Kiev.
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.
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.
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).
Guillaume Wittouck
Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.
He was the Grandfather of industrialist Paul Wittouck.

Question: Who is Vladimir Iv Rurikovich's paternal grandfather?
Answer: Rostislav I of Kiev