Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Trisong Detsen
Trisong Detsen  was the son of Me Agtsom, the 38th emperor of Tibet.
He ruled from AD 755 until 797 or 804.
Trisong Detsen was the second of the Three Dharma Kings of Tibet, playing a pivotal role in the introduction of Buddhism to Tibet and the establishment of the Nyingma or "Ancient" school of Tibetan Buddhism.
The empire Trisong Detsen inherited had declined somewhat from its greatest extent under the first Dharma King, Songtsen Gampo.
Disintegration continued when, in 694, Tibet lost control of several cities in Turkestan and, in 703, Nepal broke into rebellion.
Meanwhile, Arab forces vied for influence along the western border lands of the Tibetan empire.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
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.
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.
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.
Guillaume Wittouck
Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.
He was the Grandfather of industrialist Paul Wittouck.
Mutik Tsenpo
Mutik Tsenpo  or Murug Tsenpo  is sometimes considered to have been one of the emperors of Tibet.
This is, however, very questionable.
Moreover, the whole period between the reigns of Trisong Detsen and Sadnalegs is very unclear, with several conflicting reports.
Trisong Detsen is said to have had four sons: Mutri Tsenpo, Muné Tsenpo, Mutik Tsenpo, and Sadnalegs.
The eldest son, Mutri Tsenpo, died early.
Muné Tsenpo is said to have taken power when his father, Trisong Detsen retired (probably around 797 CE).
After a short reign, Muné Tsenpo, was supposedly poisoned on the orders of his mother, Tsephongsa, who was jealous of his beautiful young wife, Queen Phoyongsa.
After his death, Mutik Tsenpo was next in line to the throne.
Several sources, however, claim that Mutik Tsenpo murdered a senior minister and was exiled to Lhodak Kharchu (lHo-brag or Lhodrag), near the Bhutanese border in the south, so the throne was taken by Sadnalegs instead.
Some sources say that Mutik Tsenpo was later killed by members of sNa-nam clan, but this couldn't have happened until after Sadnalegs became king, as Sadnalegs mentions in an inscription at Zhwa'i-lha-khang that he took power from his father, that one of his brothers had died, and that he bound his elder brother, Mur-rug-brtsan, with an oath.
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.

Question: Who is Mutik Tsenpo's paternal grandfather?
Answer: Me Agtsom