Louis, Count of Évreux
Louis of Évreux (3 May 1276 – 19 May 1319, Paris) was a prince, the only son of King Philip III of France and his second wife Maria of Brabant, and thus a half-brother of King Philip IV of France.
Louis had a quiet and reflective personality and was politically opposed to the scheming of his half-brother Charles of Valois.
He was, however, close with his nephew Philip V of France.
He married Margaret of Artois, daughter of Philip of Artois and sister of Robert III of Artois, and had five children:
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
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.
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
Charles d'Évreux
Charles d'Évreux (1305 – 5 September 1336) was the son of Louis, Count of Évreux and Margaret of Artois.
From his father, he inherited the lordship of Étampes, which was made a county in 1327.
He married Maria de La Cerda y de Lara, the daughter of Fernando de la Cerda, in April 1335 at Poissy.
They had two children:
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.
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.
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.

Question: Who is Charles D'Évreux's paternal grandfather?
Answer: Philip III of France