Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
David II of Iberia
David II( died 937) was a member of the Georgian Bagratid dynasty of Tao- Klarjeti and titular king of Iberia from 923 until his death.
The eldest son and ultimate successor of Adarnase IV of Iberia as king of Iberia, David's control was limited to the duchies of Queli- Javakheti, and Lower Tao as the core lands of Inner Iberia( Shida Kartli) were under the Abkhazian control.
In spite of his royal title and unlike his father, David did not bear the traditional high Byzantine title of" curopalates" which was bestowed by the emperor upon David's younger brother Ashot II.
As a result, David's influence and prestige were overshadowed by those of his younger brother, Ashot II.
As evidenced by Constantine Porphyrogenitus's" De Administrando Imperio", David only had the title of" magistros" which he shared with his relative Gurgen II of Tao.
Both Gurgen and David resolutely opposed the Byzantine takeover of the Bagratid town of Artanuji, a fief of Gurgen's father- in- law, Ashot the Swift.
During the dispute, David even arrested the Byzantine plenipotentiary, the" patrikios" Constans, who was dispatched to create Gurgen" magistros" and bring David's brother Ashot for investiture as" curopalates".
David died childless, being succeeded by his brother Sumbat I.
Gurgen II of Tao
Gurgen II "the GreatGurgen Didi")
(died February 14, 941) was a Georgian prince of the Bagratid dynasty of Tao-Klarjeti and hereditary ruler of Tao with the title of "eristavt-eristaviduke of dukes".
He also bore the Byzantine title of magistros.
The son of Adarnase III of Tao, Gurgen succeeded on the death of his paternal uncle Ashot Kukhi in 918.
He features prominently in the medieval Georgian sources, being nicknamed as "the Great".
A patron of local monastic communities, Gurgen presided over the construction of a new cathedral at Khandzta.
Gurgen was an energetic ruler and accumulated in his hands much power, ruling over Tao, parts of Klarjeti and Javakheti, and also Adjara and Nigali.
The expansion of his territories was at the expense of his cousins and neighbours.
Thus, sometime between 923 and 941, he wrested Klarjeti from his father-in-law Ashot "the Prompt", son of Bagrat I, giving him two other domains — western part of Javakheti and Adjara — in exchange.
He further made a thrust at Armenian-held Samshvilde, as well.
Gurgen was married to a daughter of Ashot
the Swift, member of the Bagratid line of Klarjeti.
They had the only daughter who married the Abasgian prince Bagrat, son of King Constantine III.
With Gurgen’s death in 941, the Bagratid line of Tao became extinct and his state was divided among other branches of the dynasty.
Ashot the Immature
Ashot I also known as Ashot Kukhi( died 918) was a Georgian prince of the Bagratid dynasty of Tao- Klarjeti and hereditary ruler of Tao with the title of" eristavt- eristaviduke of dukes".
He was nicknamed" kukhi", meaning" the Immature".
Ashot was the younger son of Gurgen I of Tao.
After the death of his elder brother Adarnase in 896, he probably stepped in and co-reigned with his nephew David who was still underage at that time.
When David died in 908, Ashot became a sole ruler which he remained until his own death in 918.
The Georgian chronicles Kartlis Tskhovreba and contemporary hagiography such as the Vita of Grigol Khandzteli by Giorgi Merchule evidence that Ashot was a keen supporter of monasticism and cultural projects in Tao- Klarjeti.
He sponsored the construction of a cathedral at Tbeti in Shavsheti( now Cevizli, Turkey) and installed as its first bishop Stepane Mtbevari from whom Ashot commissioned the hagiographic novel" Martyrdom of Mikel- Gobron".
A statue purportedly showing Ashot Kukhi which was removed from Tbeti towards the end of World War I is now on display at the Art Museum of Georgia in Tbilisi.
Bagrat I of Tao
Bagrat I( died March 945) was a Georgian prince of the Bagratid dynasty of Tao- Klarjeti and hereditary ruler of Upper Tao with the Byzantine title of magistros.
He also held lands in Javakheti, Shavsheti, Kola, Artaani and Phasiane.
Bagrat was a son of the Georgian king Adarnase IV and acquired the duchy of Upper Tao after the death, in 941, of his relative Gurgen II with whom the first house of Tao became extinct.
Bagrat was, thus, the founder of the second house of Tao whose ascendancy would last until 1000/ 1001.
According to the 18th- century historian Vakhushti, Bagrat also held the Byzantine title of curopalates, but this is not attested by earlier sources.
Bagrat was survived by a son, Adarnase.
A church inscription from Ishkhani( now in Turkey) calls Bagrat" magistros and king".
Ashot the Beautiful
Ashot the Beautiful was a Georgian Bagratid prince of Tao- Klarjeti.
Son of Adarnase II of Tao- Klarjeti.
Died in 867.
Adarnase III of Tao
Adarnase III  (died 896) was a Georgian prince of the Bagratid dynasty of Tao-Klarjeti and hereditary ruler of Tao with the title of "eristavt-eristaviduke of dukes".
Adarnase was the oldest son of Gurgen I of Tao upon whose death in a dynastic strife he succeeded in 891.
Adarnase's tenure was short-lived.
He died six years after his accession, leaving two sons and a daughter behind:
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Ashot the Swift
Ashot the Swift( died in 939) was a Georgian prince of the Bagrationi dynasty from Tao- Klarjeti.
Ashot was a son of Bagrat I of Klarjeti.
He was married to the sister of George II of Abkhazia.
Together they had a daughter who was married to Gurgen II of Tao.
Ashot was in possession of the important fortified town of Artanuji, which he probably inherited from his elder brother, Gurgen I of Klarjeti.
According to Constantine Porphyrogenitus'" De Administrando Imperio", Ashot was on bad terms with his son-in- law Gurgen of Tao, who was determined to take Artanuji as his own.
Ashot offered to hand the town over to the Byzantines in return for their protection.
The Byzantine plenipotentiary, the" patrikios" Constans fulfilled his mission to confirm Gurgen of Tao as" magistros" and proceeded to occupy Artanuji with the Chaldian army.
The Georgian princes, competing with Ashot, protested and threatened to go over to the Arabs unless it was restored.
The emperor Romanos I Lekapenos had to disown Constans's action to pacify them.
Ashot the Swift was given back Artanuji, but Gurgen soon captured the town and gave his father- in- law some land in compensation, which also he later annexed.
Ashot died in 939 as a refugee at the court of his brother- in- law, George II.
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 Gurgen Ii Of Tao?
Answer: Gurgen I of Tao