My name is Jacques Doiron and for almost 2 years, I'm working on my genealogy. I just read your May 7th, 2001 message and I think maybe help you in your research.
The source is microfilm copy from les Archives Nationales du Québec for BSM St-Alexis-de-Matapédia (QC) 1871-1884:
Your grandfather was Alexis-Olivier Doiron, born and baptised June 13 1877. His parents were Thomas Doiron and Émilie Arseneau, married in Sainte-Anne-de-Restigouche (QC) May 16th 1870. His godparents were Pierre Doiron and Adèle Arseneau. His father was present and signed th register.
His wife, Sophie Gallant was the daughter of Arthème Gallant et Léocardie Gallant.