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.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
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.
Guillaume Wittouck
Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.
He was the Grandfather of industrialist Paul Wittouck.
Sakina Banu Begum
Sakina Banu Begum( died 25 August 1604) was a Mughal princess, the daughter of Mughal emperor Humayun.
Saliha Banu Begum
Saliha Banu Begum( died 10 June 1620) was Empress consort of the Mughal Empire as the wife of Emperor Jahangir.
She was also known as the Padshah Banu Begum or the Padshah Mahal.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Bakshi Banu Begum
Bakshi Banu Begum (born September 1540) was a Mughal princess and was the second daughter of Emperor Humayun from his wife Gunwar Bibi.
Bakshi Banu was thus the older half-sister of the Mughal Emperor Akbar.
Humayun
Nasir-ud-Din Muḥammad (6 March 1508 – 27 January 1556), better known by his regnal name, Humayun , was the second emperor of the Mughal Empire, who ruled over territory in what is now Afghanistan, Pakistan, Northern India, and Bangladesh from 1530–1540 and again from 1555–1556.
Like his father, Babur, he lost his kingdom early but regained it with the aid of the Safavid dynasty of Persia, with additional territory.
At the time of his death in 1556, the Mughal Empire spanned almost one million square kilometres.
In December 1530, Humayun succeeded his father to the throne of Delhi as ruler of the Mughal territories in the Indian subcontinent.
Humayun was an inexperienced ruler when he came to power, at the age of 22.
His half-brother Kamran Mirza inherited Kabul and Kandahar, the northernmost parts of their father's empire.
Mirza was to become a bitter rival of Humayun.
Humayun lost Mughal territories to Sher Shah Suri, but regained them 15 years later with Safavid aid.
Humayun's return from Persia was accompanied by a large retinue of Persian noblemen and signalled an important change in Mughal court culture.
The Central Asian origins of the dynasty were largely overshadowed by the influences of Persian art, architecture, language, and literature.
There are many stone carvings and thousands of Persian manuscripts in India dating from the time of Humayun.
Subsequently, Humayun further expanded the Empire in a very short time, leaving a substantial legacy for his son, Akbar.

Question: Who is Bakshi Banu Begum's paternal grandfather?
Answer: Babur