Jiajak Jaqeli
Jiajak Jaqeli was the Empress consort of Alexios II of Trebizond.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Nikephoros Katakalon
Nikephoros Euphorbenos Katakalon was a Byzantine aristocrat and son-in- law of Emperor Alexios I Komnenos.
He was the son of the distinguished general Constantine Euphorbenos Katakalon, one of Alexios' most trusted officials.
As a token of Alexios' appreciation for Constantine, Nikephoros was married to the" porphyrogennete" Maria, the emperor's second daughter, and raised to the rank of" panhypersebastos".
From the" Alexiad", he is known to have participated in combat against the Cumans in 1095, alongside his father, where he distinguished himself by his bravery.
It is unknown when he died, but he is recorded as being dead by 1130.
With Maria, he had numerous children, but only two sons, Alexios Komnenos and Andronikos, are known by name, having held senior positions later in the century.
Another son, John, is known only by his commemoration in the" typikon" of the Monastery of Christ Philanthropos.
The couple also had an unknown number of daughters( at least three according to Varzos), as their existence is mentioned in the" typikon" of the Kecharitomene Monastery.
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.
George Palaiologos
George (Georgios) Palaiologos or Palaeologus  was a Byzantine general, one of the most prominent military commanders and supporters of Emperor Alexios I Komnenos (r. 1081–1118).
He was the son of the first known member of the Palaiologos family, the "strategos" of Mesopotamia Nikephoros Palaiologos.
His wife Anna Doukaina was the sister of Irene Doukaina, the wife of Alexios I Komnenos, making him the emperor's brother-in-law.
As Alexios Komnenos’ leading general and close friend, he played an important role in his campaigns, especially the Battle of Dyrrhachium against the Normans or the Battle of Levounion against the Pechenegs.
He was the chief source used by Anna Komnene in her "Alexiad" on her father’s battles, and is very favourably portrayed by her in her book as both capable and loyal.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Nicholas Kallikles
Nicholas Kallikles was a prominent physician and a leading court poet active in the Byzantine court in Constantinople during the reigns of Alexios I Komnenos( r. 1081– 1118) and John II Komnenos( r. 1118–1143).
Alexios Komnenos (son of Andronikos I)
Alexios Komnenos (1170 – 1199) was a natural son of Andronikos I Komnenos, the Byzantine Emperor
(r. 1183 – 1185) by his relative and mistress Theodora Komnene, Queen Dowager of Jerusalem.
During the reign of Emperor Manuel I Komnenos (r. 1143–1180), Alexios accompanied his father Andronikos in exile, visiting, inter alia, the Kingdom of Georgia.
The Georgian king George III, their relative, granted to Andronikos several castles in Kakhetia in the east of Georgia.
Andronikos returned to Constantinople and attained to the Byzantine crown in 1183, only to be overthrown and killed in 1185.
Alexios then fled to Georgia, where he was restored to his father's Georgian estates.
At one point, he was even considered by some Georgian nobles as a candidate to become a consort of the queen regnant Tamar of Georgia.
According to the Georgian historical tradition, Alexios's progeny flourished in Georgia, producing the noble family of Andronikashvili, i.e., "scions of Andronikos", so named after Alexios's purported son.
In spite of the extremely fragmentary nature of the early Andronikashvili pedigree, Professor Cyril Toumanoff (1976) accepted the Komnenian origin as plausible, but the evidence marshaled by Kuršankis (1977) suggests that this may have been only a legend.
Toumanoff also assumed that the line of the "provincial kings" of Alastani (c. 1230–1348), known from the medieval Georgian sources and including one named Andronikos, might have belonged to the Georgian Komnenoi/Andronikashvili.
Andronikos I Komnenos
Andronikos I Komnenos (– 12 September 1185), usually Latinized as Andronicus I Comnenus, was Byzantine Emperor from 1183 to 1185.
He was the son of Isaac Komnenos and the grandson of the emperor
Alexios I.

Question: Who is the paternal grandfather of Alexios Komnenos (Son Of Andronikos I)?
Answer: Isaac Komnenos