Hazel,
While I realize this post is very old and you may already have found answers to your question, I believe that my great-grandmother Bertha Thompson is a sister of Josephine (Thompson) Gaard. I also believe that other siblings included Andrew, Hannah, John, Louis, Annie, and Martin. My grandmother (Bertha's daughter) spoke often of a cousin Mabel Gaard, whom I believe is a daughter of Josephine Gaard.
My mom and I are just beginning our research into the Thompson family and would be happy to share any of the information we have discovered or know about the Thompson family.