John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
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.
Bharata (Mahabharata)
In Hindu scriptures, Bharata  is an ancestor of the Pandavas and the Kauravas in the Sanskrit epic Mahabharata.
Though the Bhāratas are a prominent community in the Rigveda, the story of Bharata is first told in the Adi Parva of the Mahabharata, wherein he is the son of Dushyanta and Shakuntala.
The story of his parents and his birth is also related in Kalidasa's famous play Abhijñānashākuntala.
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.
Bhumanyu
Bhúmanyu means Emperor.
Bhúmanyu / Bhoomanyu / Bhuvmanyu was the successor of first emperor of India, Bharata.
Emperor Bharata, one of the greatest kings of ancient India, and founder of the eponymous dynasty, had nine sons from three wives.
None of Bharata's sons were worthy enough to become the next Emperor.
Bharata was not pleased with his sons and so their mothers became angry and slew them all.
Bharata then performed a great sacrifice for obtaining an heir to the throne Bhúmanyu was born out of that great sacrifice performed by the Sage Bharadwaja at the behest of Bharata.
Bhúmanyu was adopted by Bharata as his son.
Bhumanyu was made the next emperor.
Bhumanyu's lineage is the story of the Mahabharat.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
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.

Question: Who is Bhumanyu's paternal grandfather?
Answer: Dushyanta