You are indeed related to the large Charron-Ducharme family, Your g-g-grandfather, Antoine, was born in Québec on Sept 05, 1777, and he came to Manitoba around 1800.
Your grand-father Patrice Ducharme and his wife Cécile Lavallée had many children. Those listed in your message are OK, as far as I know. I have many others (10 in fact) but I have very few details on most of them, except their names.
I suggest that you contact me at my email address, firstname.lastname@example.org, so we can exchange faster and try to get the correct picture of your father's family