Edward, my mother is also a gr-grand daughter of Wilhelm and Wilhelmina. I have been in contact with several Allenbergs, including those from Washington State, but I am not aware of any in Montana. Do you have family tree information, stories, pictures and other information that you would like to share? I am compiling what I have and will put it in a book form, and send you a copy when it is done, if you are interested. I have a wedding photo of Wilhelm and Wilhelmina, but not much else as far as photos. I do have immigration papers, and other documents such as Wilhelm's will. Who was Dorothy's parents? and grand-parents? My mother's father was William Callen who was born to Edward Callen and Emma Allenberg (their youngest child). Emma was the only Allenberg born in the U.S., and was born in Spring Hill (North Side) before they bought the farm in Millerstown. Where are you located, near Pittsburgh?