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.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
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.
Guillaume Wittouck
Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.
He was the Grandfather of industrialist Paul Wittouck.
Carloman (mayor of the palace)
Carloman (between 706 and 716 – 17 August 754) was the eldest son of Charles Martel, "majordomo" or mayor of the palace and duke of the Franks, and his wife Chrotrud of Treves.
On Charles's death (741), Carloman and his brother Pepin the Short succeeded to their father's legal positions, Carloman in Austrasia, and Pepin in Neustria.
He was a member of the family later called the Carolingians
and it can be argued that he was instrumental in consolidating their power at the expense of the ruling Merovingian kings of the Franks.
He withdrew from public life in 747 to take up the monastic habit, "the first of a new type of saintly king," according to Norman Cantor, "more interested in religious devotion than royal power, who frequently appeared in the following three centuries and who was an indication of the growing impact of Christian piety on Germanic society".
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.
Drogo (mayor of the palace)
Drogo (born c. 730) was a Frankish nobleman of the Pippinid family and the eldest son of Carloman, mayor of the palace of Austrasia, under the Merovingian king Childeric III.
He succeeded to his father's office in 747, but was soon squeezed out of power by his uncle, Pippin III, the mayor in Neustria.
He resisted his uncle's takeover, but in 753 was captured and forced to become a monk.
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.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.

Question: Who is the paternal grandfather of Drogo (Mayor Of The Palace)?
Answer: Charles Martel