It seems this man was a boarder in the Lessard family household. He was older. In the 1910 census he is listed as a house boarder, Doll, G. age 40 - while Mamie is only age 15. I think he might have had a previous wife - maybe that is the reason for the name changes? He seems to have a lot of last names; going by Drouillard, Doll, or Dall. On the census records he is listed as either Doll or Dall when living with the Lessard family. His children by Mayme (Mamie) or Marie (her middle name) all seem to be having their last name spelled as Dall, as of the 1930 census where is listed as going by the name Marie Dall.