Hi Laura I am also researching this family. Severe is the brother of Joseph Frederick Coll, Joseph was born in1848. He married Genevieve Sophie Letendre at St Bonaventure, Yamaska 1876. They are listed on the 1880 census as Frederick and Genevievre Cole living in Manchester, NH.
Other children of Monique and Gabriel:
Cedelie married Oliver Bosivert
Domithilde married Alexis Cahier
Emerence married Honore Martel,
Emilie married Emmanuel Daviau,
Napoleon married Cedelie Duhaime
Gabriel married a second time to Aurelie LeFebvre and there are several children from that marriage.
I would be so interested to hear about your research. Do you have a birthdate for Severe?