Ginevra d'Este
Ginevra d'Este (24 March 1419 - 12 October 1440) was an Italian noblewoman.
She and her twin sister Lucia (died 1437) were daughters of Niccolò III d'Este and his second wife Parisina Malatesta
- they also had a younger brother, who died aged a few months.
She was the first of Sigismondo Pandolfo Malatesta's three wives.
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.
Fujiwara no Nagara
, also known as Fujiwara no Nagayoshi, was a Japanese statesman, courtier and politician of the early Heian period.
He was the grandfather of Emperor Yōzei.
Parisina Malatesta
Laura Malatesta (140421 May 1425), better known as Parisina Malatesta, was the daughter of Andrea Malatesta, lord of Cesena, and his second wife, Lucrezia Ordelaffi.
She had an affair with her bastard stepson Ugo d'Este, and both were beheaded by her husband, Marquis Niccolò III d'Este of Ferrara.
After Edward Gibbon's mention of this story, Byron wrote the poem "Parisina", which was followed by operas of the same name by Donizetti and Mascagni.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Henry Bryant (naturalist)
Henry Bryant( May 12, 1820 – February 2, 1867) was an American physician and naturalist.
He was the grandfather of Henry Bryant Bigelow.
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.
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.
Guillaume Wittouck
Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.
He was the Grandfather of industrialist Paul Wittouck.

Question: Who is the maternal grandfather of Ginevra D'Este?
Answer: Andrea Malatesta