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.
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.
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.
Fred Le Deux
Frederick" Fred" Le Deux( born 4 December 1934) was an Australian rules footballer who played with Geelong in the Victorian Football League( VFL).
He is the grandfather of Tom Hawkins.
Henry Krause
Henry J." Red" Krause, Jr.( August 28, 1913 – February 20, 1987) was an American football offensive lineman in the National Football League for the Brooklyn Dodgers and the Washington Redskins.
He played college football at St. Louis University.
He is the grandfather of Jennifer Krause
He is the great grandfather of Payton Hoeing
John Mackay (poet)
John Mackay( 1656–1754), known as( The Blind Piper), was a Scottish Gaelic poet and composer, and the grandfather of William Ross.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Zhao Shoushan
Zhao Shoushan( 12 November 1894 – 20 June 1965) was a KMT general and later Chinese Communist Party politician.
He is the grandfather of Zhao Leji.
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 Sadnalegs?
Answer: Me Agtsom