May not relate exactly, but just noticed another possiblity for DesNoyers...in LDS it shows Antoine Viau dit Lesperance b. 26 Mar 1744 St. Joseph-de-Chambly QC the son of Laurent Viau dit Lesperance and M.Charlotte DesMarest dit DesNoyers...

You most likely have many of the earliest ancestors in your Desnoyers line...Cheers