Dan. It is most likely that the Renaud inthe 1871 census for Verchères are the same as your Deslauriers. Clément Deslauriers was married in 1873 at probable age 25, making him about 23 and single at 1871 census. His father Louis Renaud was married to Monique Marchessault in 1837 at minimum age 18, maximum age 36, thus aged between 52 and 70 at the 1871 census (probably around 60). Louis' father was Louis Renaud dit Deslauriers, married 1800, at least 90 at 1871 census if living. Write if you wish for more details and would like to share info.