I asked my father what his grandfater's name was and he said it was Iddo Cass but could not remember if it was his greatgrandfather or his grandfather. From what you have written both might have been Iddo Cass. Did Thomas have any brothers? My Grandfather's name was Daniel Cass he would have been Born in the 1890's and I know he had a number of siblings. Some of the siblings maybe-Alice,Mitz,Clyde.