Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Me Agtsom
Me Agtsom ("Bearded Grandfather"), birth name Tridé Tsuktsen (704–755 CE) was the emperor of the Tibetan Empire and the son of Tridu Songtsen and his queen, Tsenma Toktokteng, Princess of Chim .
He is usually known by his nickname "Mé AktsomBearded Grandfather", which was given to him later in life because he was so hirsute.
His father, Tridu Songtsen, died in 704 in battle in Mywa territory in the Kingdom of Nanzhao (modern lowland Yunnan).
The "Old Book of Tang" states he was on his way to suppress tributary kingdoms on the southern borders of Tibet, including Nepal and parts of India.
There was a dispute among his sons but "after a long time" the people put seven-year-old Tridé Tsuktsen on the throne.
Sadnalegs
Sadnalegs or Tridé Songtsen, was the youngest son of King Trisong Detsen of Tibet( reigned 800–815 CE – though various accounts give the beginning of his reign as 797 or 804 CE).
Trisong Detsen retired to live at Zungkar and handed power to his second son, Muné Tsenpo, in 797.
From this point there is much confusion in the various historical sources.
It seems there was a struggle for the succession after the death of Trisong Detsen.
It is not clear when Trisong Detsen died, or for how long Muné Tsenpo reigned.
It is said that Muné Tsenpo was poisoned by his mother who was jealous of his beautiful wife.
Whatever the case, both the" Old Book of Tang" and the Tibetan sources agree that, since Muné Tsenpo had no heirs, power passed to his younger brother, Sadnalegs, who was on the throne by 804 CE.
The other brother, Mutik Tsenpo, was apparently not considered for office as he had previously murdered a senior minister and had been banished to Lhodak Kharchu near the Bhutanese border.
As he was quite young when he came to the throne, Sadnalegs was assisted by four experienced ministers, two of whom were also Buddhist monks.
They followed the policies of the previous kings.
Sadnalegs had four wives from different Tibetan clans.
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.
Magyal Dongkar
Tsepangsa Magyal Dongkar was an important Tibetan Empire female.
She was empress of Trisong Detsen, the famous Dharma king.
Unlike her husband, she was a follower of Bon.
She was born and raised in" Tsepang" clan.
the" Tsepang" clan came from Zhangzhung, and was one of a most important supports of Bon. Trisong Detsen was interested in Buddhism, he sent Vairotsana to India to study Vajrayana together with another four monks.
They were ordered to propagate Buddhism after they returned to Lhasa.
Many Tibetan nobles combined against them in the lead of the empress.
According to" Padma- thang- yig", the empress said as below in the public place, and was supported by a majority of ministers:
The empress demanded Trisong Detsen to put the five monks to death.
The emperor had no choice but to throw them into prison.
The emperor arrested five beggers and had them executed, and put their bodies into five copper pots.
The pots were thrown into Yarlung Tsangpo River in the public eye.
Then the emperor told his ministers that the five monks were executed, while still- living monks were released secretly and hidden in the palace translating" Tantras" into Tibetan.
The empress exposed this matter to ministers, Trisong Detsen had to exiled them to Rgyalrong( mordern Ngawa Autonomous Prefecture in Sichuan).
Later, Trisong Detsen invited Śāntarakṣita and Vimalamitra came to Tibet to spread the latest understanding of the teaching, they were obstructed by the empress without any exception.
Śāntarakṣita could do nothing but to invite another famous teacher Padmasambhava come to Tibet for help.
Trisong Detsen received empowerment from Padmasambhava, in turn, he gave one of his spouses named Yeshe Tsogyal to Padmasambhava as" dakini"( see also" Karmamudrā").
The emperor's decision was strongly opposed by many nobles, including the empress Magyal Dongkar, and the famous general Nganlam Takdra Lukhong.
They thought it was" absolutely ridiculous":
Padmasambhava occupied the emperor's spouse, and he would occupied the emperor's throne next time.
In response, the emperor hosted a famous debate between Buddhist and Bon supporters, and the winner would be recognised as the" state religion" in Tibet.
Bon was supported by the empress and Nganlam, but finally, Trisong Detsen announced that Buddhist was the winner.
Bon was declared as illegal religion, their scriptures were buried into ground or thrown into water.
Nganlam refused to carry out this order.
He was caned in public then exiled to Changtang.
The king of Zhangzhung was also dissatisfied with this decision.
He led a rebellion against emperor, and was quickly put down.
Now Magyal Dongkar and her clan members had to convert to Buddhism.
She built a temple named" Kams- gsum- zangs- kang- gling" for Buddhist, but was still not trust by the emperor due to her relationship with Zhangzhung and Bon before.
" Tsepang" members were banned from political affairs, and came into conflict with the powerful" Lönchen", Nanam Shang Gyaltsen Lhanang, whom was Trisong Detsen's uncle.
On one occasion, the emperor sent" dbu ring", whom was Shang Gyaltsen's son, to guard the palace gate in order to prevent" Tsepang" members from entering.
Prince Murug, who was the empress' own son, was angered.
He killed" dbu ring" and broke into the palace.
Trisong Detsen was infuriated, and exiled Murug to Changtang.
Shang Gyaltsen died in 796, and Trisong Detsen died next year.
The empress' son Muné Tsenpo was installed as the new emperor," Tsepang" members came into power again and exiled Yeshe Tsogyal.
But, Muné Tsenpo was interested in Buddhism instead of Bon, and he buried his father in Buddhism rites.
The young king also tried to protect his wife" pho- yong- bza' rgyal- mo- btsun", a devout Buddhist whom the former emperor wanted him to protect, which made Magyal Dongkar very angry.
She found an excuse then had her killed.
The relations between mother and son became strained after this event.
Magyal Dongkar poisoned the young emperor, and ordered the exiled prince Murug come back to take the throne.
Murug was assassinated by" Nanam" members on his way to Lhasa.
Sadnalegs was the only one survived prince of Trisong Detsen after this assassination, and he came to the throne with the help of a Buddhist monk, Nyang Tingngezin Sangpo.
After Sadnalegs' succession," Tsepang" members were removed from their positions and banned from taking part in any political activities.
Her name was not mentioned in the later history records.
Jinamitra
Jinamitra was an Indian pandita who travelled to Samye in the Tibetan Empire to engage in translation, at the time of Trisong Detsen, in the sixth century CE.
Jinamitra worked with Jñānagarbha and Devacandra to translate the" Mahāyāna Mahāparinirvāṇa Sūtra" and was a famous lotsawa" translator".
Kamalaśīla
Kamalaśīla( Skt. Kamalaśīla; Tib. པདྨའི་ངང་ཚུལ་, Pemé Ngang Tsul; Wyl. pad+ma'i ngang tshul)( c. 740-795) was an Indian Buddhist of Nalanda Mahavihara who accompanied Śāntarakṣita( 725–788) to Tibet at the request of Trisong Detsen.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Trisong Detsen
Trisong Detsen  was the son of Me Agtsom, the 38th emperor of Tibet.
He ruled from AD 755 until 797 or 804.
Trisong Detsen was the second of the Three Dharma Kings of Tibet, playing a pivotal role in the introduction of Buddhism to Tibet and the establishment of the Nyingma or "Ancient" school of Tibetan Buddhism.
The empire Trisong Detsen inherited had declined somewhat from its greatest extent under the first Dharma King, Songtsen Gampo.
Disintegration continued when, in 694, Tibet lost control of several cities in Turkestan and, in 703, Nepal broke into rebellion.
Meanwhile, Arab forces vied for influence along the western border lands of the Tibetan empire.

Question: Who is Trisong Detsen's paternal grandfather?
Answer: Tridu Songtsen