Hi Rob,
I found this information a few years ago on an Arcadian website. Now I think the Gumlaw came from my grandfather's grandmother on his maternal side. So it would've been a Brault(father) married to a Gumlaw (mother's maiden name). I have heard through some oral history that the Gumlaw/Gamelin name was either Mohawk, Micmaq, Metis or Abenaki although I have found no exact proof of this.
Sue