I've found my late mother-in-laws brother, Walter Ernest Poss. His grandson, John/Rick Smith of Missouri have confirmed the relationship. Stella married a Hames and raised her family in Atlanta, GA. Walter went to Illnois and married Elsie Elesibeth Walliser and raised his 10 children there.
Now, if someone out there could help us find the other brother, Arthur Poss, or help us find out which family Jonah came from...we'd both be so greatful. We believe that Jonah was the youngest child in his family as he had a family treasure that was handed down to the youngest child in the family. It went to his youngest child and now belongs to my granddaughter.