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.
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.
Fiorenza I Sanudo, Lady of Milos
Fiorenza Sanudo (died after 1397) was lady of the island of Milos in Frankish Greece.
She was a daughter of Marco Sanudo, Lord of Milos.
She married in 1383 Francesco I Crispo, who became the tenth Duke of the Archipelago, and had issue.
Guillaume Wittouck
Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.
He was the Grandfather of industrialist Paul Wittouck.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
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.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Marco Sanudo, Lord of Milos
Marco Sanudo was a lord of the island of Milos in Frankish Greece.
He was a son of William I Sanudo and the brother of Nicholas I Sanudo and John I Sanudo, who were all Dukes of the Archipelago.
He married an unknown wife and had a daughter Fiorenza I Sanudo, Lady of Milos, who married in 1383 Francesco
I Crispo, who also became the tenth Duke of the Archipelago.
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.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.

Question: Who is Fiorenza I Sanudo, Lady Of Milos's paternal grandfather?
Answer: William I Sanudo