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.
Alfred Wojciech Potocki
Count Alfred Wojciech Potocki hr.
Pilawa (1785–1862) was a Polish nobleman (szlachcic), landowner, political and economic activist.
Alfred was the 1st Ordynat of Łańcut estates.
From 1809 until 1815 he served in the Polish Army.
In 1812 he became aide-de-camp of Prince Józef Antoni Poniatowski and participated in Napoleon's campaign against Russia.
In 1838 he created the Łańcut Ordynacja.
Since 1861 Alfred was member of the National Sejm in Galicia, and member of the Herrenhaus.
He served as Austrian councillor and was Great Galician Ochmistrz.
Alfred helped to modernize the agriculture in Galicia.
He founded textile (1839–1844) and sugar (1836 industries and 1841) factories.
He was co-founder of the "Estate Credit Society" in Lwów.
Since 1823 he ran the Lubomirski family distillery in Łańcut, which exists today under the name Polmos Łańcut.
His father was the writer Jan Potocki, best known for his famous novel The Manuscript Found in Saragossa.
His brother was Count Artur Potocki (1787–1832), who married Countess Zofia Branicka.
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.
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.
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).
Ewa Józefina Julia Potocka
Countess Ewa Józefina Julia Eudoksja Potocka hr.
Piława (born 10 August 1818 in Paris – 21 May 1895 in Vienna) was a Polish noble lady of the Potocki family.
She was the daughter of Count Alfred Wojciech Potocki and Princess Józefina Maria Czartoryska.
Her brother Count Alfred Józef Potocki was the 2nd Ordynat of the Łańcut Fee Tail.
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 Ewa Józefina Julia Potocka?
Answer: Jan Potocki