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.
Meñli I Giray
Meñli
I Giray  (1445–1515), also spelled as Mengli I Giray, was a "khan" of the Crimean Khanate (1466, 1469–1475, 1478–1515) and the sixth son of Hacı I Giray.
Guillaume Wittouck
Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.
He was the Grandfather of industrialist Paul Wittouck.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
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.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Ayşe Hatun (daughter of Bayezid II)
Ayşe Hatun was an Ottoman princess, the daughter of Sultan Bayezid II.
Ayşe Hatun (wife of Selim I)
Ayşe Hatun (1476–1539) was a daughter of Meñli I Giray.
Beyhan Sultan (daughter of Selim I)
Beyhan Sultan( died 1559) was an Ottoman princess, daughter of Selim I and Ayşe Hatun.
She was the sister of Sultan Suleiman the Magnificent.

Question: Who is Ayşe Hatun (Wife Of Selim I)'s paternal grandfather?
Answer: Hacı I Giray