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.
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 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
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.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Trịnh Cương
Trịnh Cương (1686–1729) was the lord who ruled Tonkin from 1709 to 1729 (his title as ruler was "An Đô Vương").
Trịnh Cương was born to Trịnh Bính, a grandson of the former lord Trịnh Căn.
He belonged to the line of Trịnh Lords who had ruled parts of Vietnam since 1545.
Like his great-grandfather and predecessor, Trịnh Căn, his reign was mostly devoted to administrative reforms.
Trịnh Doanh
Trịnh Doanh (4 December 1720 – 15 February 1767) ruled northern Vietnam (Tonkin) from 1740 to 1767 (he ruled with the title "Minh Đô Vương").
Trịnh Doanh was a third son of Trịnh Cương, and belonged to the line of Trịnh Lords who ruled northern Vietnam.
His rule was spent putting down rebellions against rule by the Trịnh.
Trịnh Doanh took over from his brother, Trịnh Giang, who, through financial mismanagement and bad behavior, provoked a wave of revolts against his rule.
This was a time of increasing peasant revolts in both the north and the south under the Nguyễn Lords.
In the north, some of the revolts were apparently led by members of the royal Lê family.
The rebellions which broke out in Tonkin during this period, were almost without number.
Princes belonging to the royal family, generals, civil mandarins, common people, and out-casts from the hills, all rose in the provinces against the tyranny of the Trịnh, as well as for their personal interests.
Chapter 16 (continued)
Despite the many revolts, Trịnh Doanh defeated them all and passed the rule of Vietnam to his son,
Trịnh Sâm.
As far as the Lê Dynasty was concerned, there was just one emperor, Lê Hien Tông (1740–1786), who occupied the royal throne in Hanoi.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Nguyễn Thị Ngọc Diễm
Nguyễn Thị Ngọc Diễm( 1721- 1784), posthumous name Từ Trạch( 慈澤), was a consort of lord Trịnh Doanh.
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.

Question: Who is the paternal grandfather of Trịnh Doanh?
Answer: Trịnh Bính