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.
Eleonora Luisa Gonzaga
Eleonora Luisa Gonzaga (13 November 1686 – 16 March 1741) was the Duchess of Rovere and Montefeltro as the wife of Francesco Maria de' Medici.
She was the eldest child of Vincenzo Gonzaga, Duke of Guastalla and Sabbioneta and his second wife, Maria Vittoria Gonzaga.
She did not bear any 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.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
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.
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.
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.
Vincenzo Gonzaga, Duke of Guastalla
Vincenzo Gonzaga (1634 – 28 April 1714) was a Duke of Guastalla.
Vincenzo was the son of Andrea Gonzaga, Count of San Paolo, and grandson of Ferrante II Gonzaga, Duke of Guastalla.<br>
After a childless first marriage, he married Maria Vittoria Gonzaga (1659–1707), the youngest daughter of his cousin, Duke Ferrante III Gonzaga of Guastalla.
When Duke Ferrante III of Guastalla died in 1678 without a male heir, Guastalla was ruled by Ferdinando Carlo, Duke of Mantua, who had married Anna Isabella Gonzaga, Duke Ferrante III's oldest daughter.<br
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Vincenzo became Duke of Guastalla in 1692.
Vincenzo and Maria Vittoria had three children :
Vincenzo Gonzaga inherited in 1707 Bozzolo and Pomponesco, and in 1710 Sabbioneta.

Question: Who is Eleonora Luisa Gonzaga's paternal grandfather?
Answer: Andrea Gonzaga