Guillaume Wittouck
Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.
He was the Grandfather of industrialist Paul Wittouck.
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.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Iacopo IV Appiani
Iacopo IV Appiani (1459 – April 10, 1510) was an Italian condottiero and lord of Piombino of the Appiani dynasty in the Renaissance.
He was born in Piombino, the son of Iacopo III Appiani, of whom he continued the traditional alliance with the Aragonese court of Naples.
He was captain of the Neapolitan Army (1479–1483), of the Este army (1483–1485) and of the army of the Republics of Siena (1495–1498) and Florence (1498–1501).
Later he served the king of France and Ferdinand II of Aragon.
In 1501 his territories in southern Tuscany were occupied by Cesare Borgia, but Iacopo could return in 1503 after the death of Borgia's power protector and father, Pope Alexander VI.
In this period he received Leonardo da Vinci in his court.
In 1509 he was made Prince of the Holy Roman Empire.
He died at Piombino in 1510.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Iacopo III Appiani
Iacopo III Appiani (1422 – 22 March 1474) was Prince of Piombino of the Appiani dynasty in the Renaissance.
He was born in Piombino, the illegitimate son of Emanuele Appiani.
Despite his reduced finances, he was a patron of the arts: people he housed in his court include the architect Andrea Guardi, which, in 1465–1470, executed a large urbanistic and architectonical renewal of Piombino.
He died at Piombino in 1474, being succeeded by his son Iacopo.
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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.
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.
Iacopo V Appiani
Iacopo V Appiani (1480 – 20 October 1545) was the lord of Piombino of the Appiani (or Appiano) dynasty from 1511 until his death.
He was born in Piombino, the son of Iacopo IV Appiani.
Like his predecessors, he initially kept a policy of alliance with the Aragonese of Naples, by marrying Marianna of Aragon in 1510, widow of Roberto II Sanseverino.
After the latter's death, he married to Emilia Ridolfi, niece of Pope Leo X; she died soon afterwards, and Jacopo remarried with her sister Clarice.
After her death, he found a new wife in Elena Salviati, daughter of Jacopo Salviati and Lucrezia de' Medici.
He was succeeded by his son Iacopo VI.
His other son Alfonso was admiral in the Navy of the Grand Duchy of Tuscany.

Question: Who is the paternal grandfather of Iacopo Iv Appiani?
Answer: Emanuele Appiani