Career
He represented L"Islet in the Legislative Assembly of Quebec from 1878 to 1881 as a Liberal. His surname was "Couillard Dupuis". He was born in Montmagny, Lower Canada, the son of Charlemagne Couillard Dupuis and Charlotte Boilard, and lived at Saint-Roch-des-Aulnaies.
Couillard Dupuis was defeated when he ran for reelection in 1881.
He died at Saint-Roch-des-Aulnaies at the age of 74.