Career
He represented Hertford in the Legislative Assembly of Lower Canada from 1796 to 1800. He was born in Saint-Thomas, the son of Félix Têtu and Marie-Madeleine Vallée, and was educated at the Petit Séminaire de Québec. He apprenticed as a notary and was licensed to practise in 1795.
Têtu practised mainly at Quebec City.
He served in the militia, reaching the rank of lieutenant-colonel. Têtu did not run for reelection in 1800 and was defeated when he ran in Dorchester in 1809.
He died in Saint-Thomas at the age of 84.