Career
He represented Laprairie in the Legislative Assembly of Quebec from 1867 to 1871 as a Conservative member. He was born in L"Assomption, Lower Canada, the son of Jean-Baptiste Thérien and Apolline Gariépy. Thérien married Marie-Félonise Colette in 1852.
He worked as a clerk in his father-in-law Paul Colette"s store before establishing himself as a merchant in Saint-Isidore.
Thérien was mayor of Saint-Isidore from 1866 to 1868. He died in Verchères at the age of 66.