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.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
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.
Radu IV the Great
Radu IV the Great,( 1467 – 23 April 1508) was a Voivode( Prince) of Wallachia from September 1495 to April 1508.
He succeeded his father, Vlad Călugărul, who was one of the three brothers to Vlad III the Impaler.
He was married to Princess Catalina Crnojević of Zeta( sometimes spelled as Katarina or Jekaterina), daughter of Andrija Crnojević.
The marriage was arranged by her uncle Ivan Crnojević, Prince of Zeta after her father's death.
Radu was succeeded by his first cousin Mihnea cel Rău, son to his uncle Vlad Țepeș.
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
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Mihnea III
Mihnea III(? – 5 April 1660) was the son of Radu Mihnea and ruler of Wallachia from March 1658 to November 1659.
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.
Radu Bădica
Radu Bădica
(? – 19 January 1524) was the son of Radu IV the Great and Prince of Wallachia from November 1523 until January 1524.

Question: Who is the paternal grandfather of Radu Bădica?