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.
Guillaume Wittouck
Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.
He was the Grandfather of industrialist Paul Wittouck.
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.
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.
Ajatashatru
Ajasaththa (Ajātasattu; 492 to 460 BCEor early 4th century BCE) was a king of the Haryanka dynasty of Magadha in East India.
He was the son of King Bimbisara and was a contemporary of both Mahavira (Nigantha Nataputta) and Gautama Buddha.
He forcefully took over the kingdom of Magadha from his father and imprisoned him.
He fought a war against Vajji, ruled by the Lichchhavis, and conquered the republic of Vesali
Ajasaththa followed policies of conquest and expansion.
He defeated his neighbours including the king of Kosala; his brothers, when at odds with him, went to Kashi, which had been given to Bimbisara as dowry.
This led to a war between Magadha and Kosala.
Ajatashatru occupied Kashi and captured the smaller kingdoms.
Magadha under Ajasaththa became the most powerful kingdom in North India.
He is the inventor of two weapons used in war called rathamusala (Scythed chariot) and mahshilakantaka (engine for ejecting big stones).
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.
Udayin
Udayin (c. 460-444 BCE) also known as Udayabhadra was a king of Magadha in ancient India.
According to the Buddhist and Jain accounts, he was the son and successor of the Haryanka king Ajatashatru.
Udayin laid the foundation of the city of Pataliputra at the confluence of two rivers, the Son and the Ganges.
He shifted his capital from Rajgriha to Patliputra due to the latter's central location in the empire.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).

Question: Who is the paternal grandfather of Udayin?
Answer: Bimbisara