Louis Lagueux studied law with Joseph Remi Vallieries de Saint-Real, and qualified to pracitce in 1817; his grandfather had served in the U.S Congress and in 1820, Louis was elected to the Legislative Assembly of Lower Canada for Dorchester where he stayed until his death from cholera in 1832.
Lagueux studied at the Petit Seminaire de Quebec, articled in law with Joseph-Remi Vallieres de Saint-Real and qualified to practice in 1817. He was born in the town of Quebec in 1793, the son of merchant Louis Lagueux and Louise Begin, whose father Charles Begin served in the legislative assembly. 
