Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
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.
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.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
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.
Rolf Rude
Rolf Rude (2 April 1899 – 5 November 1971) was a Norwegian painter.
He was born in Oslo as a son of photographer Ernest Rude.
He is represented in the National Gallery of Norway with six paintings and several woodcuts.
He chaired the Association of Norwegian Printmakers from 1953 to 1964 and Bildende Kunstneres Styre from 1964 to 1967.
He resided in Bærum, later in Ullern.
Ernest Rude
Ernest Rude (23 January 1871 – 18 March 1948) was a Norwegian photographer.
He was born in Drammen as a son of photographer Christoffer Gade Rude (1839–1901) and his wife Andrea Elise Geelmuyden (1839–1920).
He was an uncle of Finn Støren.
He started his career in his father's company, and from 1907 to 1910 he ran a company together with Frederik Hilfling-Rasmussen.
He continued to run this company until his death in March 1948 in Oslo, from 1943 with Andreas Thorsrud who took it over.
As a photographer Rude was best known for portrait photography.
He chaired the Norwegian Association of Professional Photographers from 1912 to 1927 and became an honorary member in 1946.
He was also an honorary member of the Swedish and Danish associations, and was appointed a Knight of the Order of the Dannebrog in 1925.
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 Rolf Rude's paternal grandfather?
Answer: Christoffer Gade Rude