Adalard of Corbie
Saint Adalard of Corbie( c. 751, Huise – 2 January 827) was son of Bernard the son of Charles Martel and half- brother of Pepin; Charlemagne was his cousin.
Theudoald
Theudoald( or Theodald; c. 708 – 741) was the mayor of the palace, briefly unopposed in 714 after the death of his grandfather, Pepin of Herstal.
Then in 715 the nobility acclaimed Ragenfrid mayor of Neustria and Charles Martel mayor of Austrasia.
Theudoald was the legitimate but later claimed illegitimate son of Grimoald II( son of Pepin II of Herstal and Plectrude) and Theudesinda of Frisia( daughter of king Radbod).
Thus, he was a grandson of the Frisian king.
His grandmother Plectrude tried to have him recognised by his grandfather as the legitimate heir to all the Pippinid lands, instead of Charles Martel.
His grandmother surrendered on his behalf in 716 to Chilperic II of Neustria and Ragenfrid.
Theudoald died, probably killed, around 741, after the death of his uncle and protector, Charles Martel.
It is notable that, despite his having been proclaimed heir to Pepin of Herstal, when Charles Martel seized power, he allowed his nephew to live, instead of killing him, as was often the case in the Middle Ages.
Ruodhaid
Ruodhaid was a mistress of Charles Martel with whom she had the following children:
Bernard, son of Charles Martel
Bernard or Bernhard de Saint Quentin (d'Herstal), Abby of von St. Quentin, Abbot of St. Quentin (c.720-787) was a son of Charles Martel by his mistress Ruodhaid.
He was thus a half Brother of the Frankish King Pepin the Short, and Uncle to the First Emperor in Western Europe since Romulus Augustulus in 476, Charlemagne.
He is an obscure figure, rising out of the mists only to lead half of the Frankish army in his nephew Charlemagne's Lombard campaign.
While Charlemagne led his contingent through the pass of Moncenisio, Bernard led his through the Great St. Bernard Pass.
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.
Charles Martel
Charles Martel (688 – 22 October 741) was a Frankish statesman and military leader who, as Duke and Prince of the Franks and Mayor of the Palace, was the "de facto" ruler of Francia from 718 until his death.
He was a son of the Frankish statesman Pepin of Herstal and Pepin's mistress, a noblewoman named Alpaida.
Charles successfully asserted his claims to power as successor to his father as the power behind the throne in Frankish politics.
Continuing and building on his father's work, he restored centralized government in Francia and began the series of military campaigns that re-established the Franks as the undisputed masters of all Gaul.
According to a near-contemporary source, the "Liber Historiae Francorum", Charles was "a warrior who was uncommonly  effective in battle".
Much attention has been paid to his success in defeating an Arab invasion in Aquitaine at the Battle of Tours.
Alongside his military endeavours, Charles has been traditionally credited with a seminal role in the development of the Frankish system of feudalism.
At the end of his reign, Charles divided Francia between his sons, Carloman and Pepin.
The latter became the first king of the Carolingian dynasty.
Charles' grandson, Charlemagne, extended the Frankish realms, and became the first emperor in the West since the fall of Rome.
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.
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 Bernard, Son Of Charles Martel's paternal grandfather?
Answer: Pepin of Herstal