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.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Henry Bryant (naturalist)
Henry Bryant( May 12, 1820 – February 2, 1867) was an American physician and naturalist.
He was the grandfather of Henry Bryant Bigelow.
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.
Abraham
Abraham (né Abram) is the common patriarch of Christianity, Islam, Judaism, and other religions.
In Judaism, he is the founding father of the covenant of the pieces, the special relationship between the Hebrews and God; in Christianity, he is the prototype of all believers, Jewish or Gentile; and in Islam he is seen as a link in the chain of prophets that begins with Adam and culminates in Muhammad.
The narrative in the Book of Genesis revolves around the themes of posterity and land.
Abraham is called by God to leave the house of his father Terah and settle in the land originally given to Canaan but which God now promises to Abraham and his progeny.
Various candidates are put forward who might inherit the land after Abraham; and, while promises are made to Ishmael about founding a great nation, Isaac, Abraham's son by his half-sister Sarah, inherits God's promises to Abraham.
Abraham purchases a tomb (the Cave of the Patriarchs) at Hebron to be Sarah's grave, thus establishing his right to the land; and, in the second generation, his heir Isaac is married to a woman from his own kin, thus ruling the Canaanites out of any inheritance.
Abraham later marries Keturah and has six more sons; but, on his death, when he is buried beside Sarah, it is Isaac who receives "all Abraham's goods", while the other sons receive only "gifts" (Genesis 25:5–8).
The Abraham story cannot be definitively related to any specific time, and it is widely agreed that the patriarchal age, along with the exodus and the period of the judges, is a late literary construct that does not relate to any period in actual history.
A common hypothesis among scholars is that it was composed in the early Persian period (late 6th century BCE) as a result of tensions between Jewish landowners who had stayed in Judah during the Babylonian captivity and traced their right to the land through their "father Abraham", and the returning exiles who based their counter-claim on Moses and the Exodus tradition.
Guillaume Wittouck
Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.
He was the Grandfather of industrialist Paul Wittouck.
Medan, son of Abraham
According to the Bible, Medan ("Məḏāncontention; to twist, conflict"); also spelt Madan was the third son of Abraham, the patriarch of the Israelites, and Keturah whom he wed after the death of Sarah.
Medan had five brothers, Zimran, Jokshan, Midian, Ishbak, and Shuah.
Josephus tells us that "Abraham contrived to settle them in colonies; and they took possession of Troglodytis and the country of Arabia Felix
(Arabia the Happy), as far as it reaches to the Red Sea.
" Abraham, in all probability, tried to keep them apart from Isaac to avoid conflict while fulfilling God's commission to spread out and inhabit the globe.
Little else is known about him.
There is no known connection to the Madan people of Iran and Iraq.
Fujiwara no Nagara
, also known as Fujiwara no Nagayoshi, was a Japanese statesman, courtier and politician of the early Heian period.
He was the grandfather of Emperor Yōzei.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.

Question: Who is Medan, Son Of Abraham's paternal grandfather?
Answer: Terah