Delorme is a very common "dit" name in Canada, and you are experiencing the same problem I did 40 years ago. You need to determine the surname that goes with it: Lemay dit Delorme, Henault dit Delorme, Fafard dit Delorme, Riel dit Delorme, etc. I believe there are about 8 different Delorme groups. So try gathering as many names, dates, and places you can and ask your questions on the Metis boards here and on www.rootsweb.com.
Try searching archivia.net in Canada for Metis script records to see if you can make any matches. Good luck