I home this reaches you since you posted this quite awhile ago. Julia Boehm Twombly is my Husband's Great Grandmother. The picture you speak of I too have a scanned copy of that I got from my father in law.
Her brother was Adam S.Boehm and her parents were Adam J. Boehm & Sophia Herman. I don't have much information on Adam J., but I have found more on Sophia and her family that I found the ship manifest of their arrival from Germany.
Adam J. Boehm's second wife's name was Philomena and she died here in the Seattle area.
I would love to talk to you more about this line, since my father in law really didn't know much. I have been sharing info with him.
I would be interested to know if you have any additional pictures of that side of the family as that is the only known photo's of all of the above my father in law had.
I will e mail you as well as post it. My e mail address is email@example.com
feel free to contact me too.