Nasrullah Khan (Afghanistan)
Nasrullah Khan (1874–1920), sometimes spelt as Nasr Ullah Khan, was shahzada (crown prince) of Afghanistan and second son of Emir Abdur Rahman Khan.
He held the throne of Afghanistan as Emir for one week, from February 21 to February 28, 1919.
Guillaume Wittouck
Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.
He was the Grandfather of industrialist Paul Wittouck.
Nasrullah Khan Bareach
Nasrullah Khan Bareach is a Pakistani politician who is member- elect of the Provincial Assembly of the Balochistan.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
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.
Abdur Rahman Khan
Abdur Rahman Khan  (between 1840 and 1844October 1, 1901) was Emir of Afghanistan from 1880 to 1901.
He is known for uniting the country after years of internal fighting and negotiation of the Durand Line Agreement with British Raj.
Abdur Rahman Khan was the first child and only son of Mohammad Afzal Khan, and grandson of Dost Mohammad Khan.
Abdur Rahman Khan re-established the writ of the Afghan government after the disarray that followed the second Anglo-Afghan war.
He became known as "The Iron Amir" because his government was a military despotism resting upon a well-appointed army administered through officials absolutely subservient to an inflexible will and controlled by a widespread system of espionage; and for his crushing of a number of rebellions by various tribes who were led by his relatives.
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.
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.

Question: Who is Nasrullah Khan (Afghanistan)'s paternal grandfather?
Answer: Mohammad Afzal Khan