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.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Konrad III the Old
Konrad III the Old  (– 28 December 1412) was a Duke of Oleśnica, Koźle, half of Bytom and half of Ścinawa since 1377 (until 1403 with his father as co-ruler).
He was the only son of Konrad II the Gray, Duke of Oleśnica, by his wife Agnes, daughter of Casimir I, Duke of Cieszyn.
Thomas Pitt
Thomas" Diamond" Pitt( 5 July 1653 – 28 April 1726) of Stratford in Wiltshire and of Boconnoc in Cornwall, was an English merchant involved in trade with India who served as President of Madras and six times as a Member of Parliament.
He was the grandfather of William Pitt, 1st Earl of Chatham(" Pitt the Elder") and was great- grandfather of Pitt the Younger, both prime ministers of Great Britain.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Guillaume Wittouck
Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.
He was the Grandfather of industrialist Paul Wittouck.
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.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Konrad VIII the Younger
Konrad VIII the Younger (after 1397 – before 5 September 1444), was a Duke of Oleśnica, Koźle, half of Bytom and half of Ścinawa during 1416–1427 (with his brothers as co-rulers) and sole Duke of half of Ścinawa since 1427 until his death.
He was the fifth and youngest son of Konrad III the Old, Duke of Oleśnica, by his wife Judith.
Like his four older brothers, at the baptism he received the name of Konrad, which was characteristic in this branch of the House of Piast.
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.

Question: Who is the paternal grandfather of Konrad Viii The Younger?