Louis Lagueux studied law with Joseph Remi Vallieries de Saint-Real, and qualified to pracitce in 1817; his grandfather had served in the legislative assembly and in 1820, Louis was elected to the Legislative Assembly of Lower Canada for Dorchester where he stayed until his death from a gunshot wound in 1832
In 1820, he was elected to the Legislative Assembly of Lower Canada for Dorchester; he represented the riding until his death at Quebec from cholera in 1832. 
