Delorme is a "dit" name that is attached to several family groups in Canada: Lemay dit Delorme, Henault dit Delorme, Fafard dit Delorme, Riel dit Delorme, etc.
Morrisette comes with numerous spelling variations. Try searching www.automatedgenealogy.com for their Indices to Canadian Censuses. You can search the 1911 census by surname and then look from there. Anna Morrisette might also be Marie Anna/Anne Morrisette (or variations).
I have 29 Joseph Delormes in my database, but unfortunately not the one you are looking for.
It might be worth your time to write to the Nipissing District Branch of the Ontario Genealogical Society, PO Box 93, North Bay, ON P1B 8G8 to see if they can help you.