Stefano Visconti
Stefano Visconti (c.1287-4 July 1327) was a member of the House of Visconti that ruled Milan from the 14th to the 15th century.
He was the son of Matteo I Visconti.
In 1318 he married Valentina Doria, daughter of Bernabò Doria from Sassello and of Eliena Fieschi, with whom he had three children: Matteo II, Galeazzo II and Bernabò, who shared the rule in Milan after his death.
Stefano died in the night of July 4, 1327, after a banquet he gave Louis the Bavarian, shortly after he was crowned King of Italy.
His contemporaries linked his death to an attempted poisoning of the King, leading to the imprisonment of three of Stefanos' four brothers, Galeazzo, Giovanni, and Luchino, as well as of his nephew, the future Lord of Milan, Azzo Visconti, in the fortress of Monza: This event marked a crisis of the relations between the Holy Roman Empire and the Visconti.
The magnificent tomb of Stefano and his wife Valentina, carved in 1359 by Bonino da Campione, is located in the Basilica Sant'Eustorgio in Milan.
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.
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.
Matteo I Visconti
Matteo I Visconti (1250–1322) was the second of the Milanese Visconti family to govern Milan.
Matteo was born to Teobaldo Visconti and Anastasia Pirovano.
In 1287, Matteo's uncle Ottone Visconti, the first lord of Milan, nominated him as "capitano del popolo" of Milan.
Following his uncle's death in 1295, he succeeded him as lord of Milan.
Matteo was appointed numerous times as Imperial Vicar over the whole of Lombardy, while expanding, with the assistance of his sons, his sphere of influence to Piedmont, Emilia, Bologna, and Genoa.
Caught between the Papal and Imperial power struggle over northern Italy, Matteo would renounce his imperial title for "General Lord of the Milanese People".
Found guilty on the charge of necromancy, excommunicated, and facing a crusade, Matteo resigned his position and died months later.
He was succeeded by his son Galeazzo I.
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.
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.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
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 paternal grandfather of Stefano Visconti?
Answer: Teobaldo Visconti