Guillaume Wittouck
Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.
He was the Grandfather of industrialist Paul Wittouck.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Kaev Hua II
Preah Keo II (born Ang Chee ; 1652–1677) also known as Kaev Hua II or Keo Fa II was a Cambodian king during the Dark ages of Cambodia.
He reigned from 1673 to 1674.
He was the son of Barom Reachea V.
During his reign Preah Keo II came into conflict with Prince Ang Nan.
With the help of the Ayutthaya Kingdom, he drove out Ang Nan to Vietnam.
Ang Nan sought help from the Vietnamese Nguyễn lord and the Vietnamese army under Nguyễn Dương Lâm and Nguyễn Đình Phái invaded Cambodia, captured Prey Nokor (Saigon), then attacked Phnom Penh.
Preah Keo II was defeated, and retreated into forest.
There, he continued fighting against the Vietnamese until he was killed in 1677.
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.
Outey I
Outey I (1672–1696), also known as "Udayaraja IINarai Ramathipadi II" or "Chey Chettha V", born Ang Yong , was the Cambodian king reigned from 1695 to 1696.
Outey I was a son of Kaev Hua II.
He succeeded the king after his uncle Chey Chettha IV's first abdication.
He reigned only ten months, died suddenly.
Chey Chettha IV then regained power.
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.
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.

Question: Who is the paternal grandfather of Outey I?
Answer: Barom Reachea V