The information I have on Abraham Dugas and Marguerite Louise Dugas is from a Family Tree Maker CD and no mention is made of their being Metis or Indian. I did not do this research so I can't vouch for its accuracy.
Abraham Dugas was b. abt. 1616 in Toulouse, or Brittany France. He d. abt. 1698 in Port Royal, Acadie, m. abt. 1647 in Port Royal, Acadie, Marguerite Louise Doucet, d/o Germain (Laverdure) France. Marguerite was b. abt. 1625 in France, d. Aft. 1686 in Port Royal, Acadie.