Question: Who is Joseph-André Taschereau's paternal grandfather?

Knowledge 1: Joseph-André Taschereau
Joseph-André Taschereau, (November 30, 1806–March 30, 1867), was a lawyer, politician, and lastly, a judge.He was born at Sainte-Marie, Quebec.The son of Thomas-Pierre-Joseph Taschereau was a quiet child who early in life discovered a passion for the law.He was educated at home and then articled and was admitted to the bar of Lower Canada in 1828 along with his brother Pierre-Elzéar Taschereau.Joseph-André had less than a year of joint practice in Quebec City with his brother, Pierre-Elzéar, who in 1826 had inherited his father’s seigneury, returned to the manor at Sainte-Marie.He continued his practice from 1830 to 1835 and then entered politics back in his home riding of Beauce.He was a maverick in the Taschereau clan, representing quite different points of view from his political relatives.He was elected a member of the Legislative Assembly of Lower Canada from 1835 to 1838.In 1845, he won a by-election to become a member of the Legislative Assembly of the Province of Canada, filling the seat left vacant by the death of Pierre-Elzéar; he resigned when he was made a circuit judge in 1847.In 1857 he was named judge of the Quebec Superior Court for the District of Kamouraska, where he had gone to live in 1852.He died in Kamouraska, Quebec at the age of 60 years.A bachelor, he devoted his life to politics and the law.As a lawyer and judge, Taschereau excelled and his achievements put him on a level with other notables in this remarkable family. [SEP] Knowledge 2: Thomas-Pierre-Joseph Taschereau
Thomas-Pierre-Joseph Taschereau was born in Quebec April 19, 1775, a son of Gabriel-Elzéar Taschereau, the patriarch of this important family, and his first wife, Marie-Louise-Élizabeth Bazin.He studied at the Petit Séminaire of Quebec from 1784 to 1792.He embarked on a military career and became a lieutenant in 1797.Demobilized in 1802, he went into business and set up a distillery with his brother Jean-Thomas Taschereau, in the Sainte-Marie seigneury.He married Françoise Boucher of Bruère de Montarville in 1805.He continued the business at this property until the War of 1812 when he served with the rank of lieutenant-colonel in the militia.Thomas-Pierre-Joseph became a member of the Legislative Council in 1818.In 1821, he took an appointment as a judge in the district of Sainte-Marie and in 1823 a more important position in the district of Quebec.He died on October 8, 1826 and was buried at Sainte-Marie.He had two sons: Joseph-André and Pierre-Elzéar Taschereau.The latter's son, Henri-Elzéar, would go on to be Chief Justice of Canada.
Knowledge 1: Joseph-André Taschereau
Joseph-André Taschereau, (November 30, 1806–March 30, 1867), was a lawyer, politician, and lastly, a judge.He was born at Sainte-Marie, Quebec.The son of Thomas-Pierre-Joseph Taschereau was a quiet child who early in life discovered a passion for the law.He was educated at home and then articled and was admitted to the bar of Lower Canada in 1828 along with his brother Pierre-Elzéar Taschereau.Joseph-André had less than a year of joint practice in Quebec City with his brother, Pierre-Elzéar, who in 1826 had inherited his father’s seigneury, returned to the manor at Sainte-Marie.He continued his practice from 1830 to 1835 and then entered politics back in his home riding of Beauce.He was a maverick in the Taschereau clan, representing quite different points of view from his political relatives.He was elected a member of the Legislative Assembly of Lower Canada from 1835 to 1838.In 1845, he won a by-election to become a member of the Legislative Assembly of the Province of Canada, filling the seat left vacant by the death of Pierre-Elzéar; he resigned when he was made a circuit judge in 1847.In 1857 he was named judge of the Quebec Superior Court for the District of Kamouraska, where he had gone to live in 1852.He died in Kamouraska, Quebec at the age of 60 years.A bachelor, he devoted his life to politics and the law.As a lawyer and judge, Taschereau excelled and his achievements put him on a level with other notables in this remarkable family. [SEP] Knowledge 2: 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.
Knowledge 1: Joseph-André Taschereau
Joseph-André Taschereau, (November 30, 1806–March 30, 1867), was a lawyer, politician, and lastly, a judge.He was born at Sainte-Marie, Quebec.The son of Thomas-Pierre-Joseph Taschereau was a quiet child who early in life discovered a passion for the law.He was educated at home and then articled and was admitted to the bar of Lower Canada in 1828 along with his brother Pierre-Elzéar Taschereau.Joseph-André had less than a year of joint practice in Quebec City with his brother, Pierre-Elzéar, who in 1826 had inherited his father’s seigneury, returned to the manor at Sainte-Marie.He continued his practice from 1830 to 1835 and then entered politics back in his home riding of Beauce.He was a maverick in the Taschereau clan, representing quite different points of view from his political relatives.He was elected a member of the Legislative Assembly of Lower Canada from 1835 to 1838.In 1845, he won a by-election to become a member of the Legislative Assembly of the Province of Canada, filling the seat left vacant by the death of Pierre-Elzéar; he resigned when he was made a circuit judge in 1847.In 1857 he was named judge of the Quebec Superior Court for the District of Kamouraska, where he had gone to live in 1852.He died in Kamouraska, Quebec at the age of 60 years.A bachelor, he devoted his life to politics and the law.As a lawyer and judge, Taschereau excelled and his achievements put him on a level with other notables in this remarkable family. [SEP] Knowledge 2: André Savard
Joseph André Denis Savard( born February 9, 1953 in Témiscaming, Quebec) is a Canadian former professional ice hockey center.

Answer: Gabriel-Elzéar Taschereau