My mother's(Anna Lois Parker) maternal grandfather was named Hanselman - She did not know his first name, he was married to Mattie Mary (?), they had at least one son, Jake or Jacob, and my g'grandmother Mary who married M. Greene Holbert. It seems the name Jake may have been given to their son as well. Mary and Greene had three daughters: Kathryn, Laura, Emma and a son, Jake - as far as I know - still searching. My uncle, Homer Parker, told me the Hanselman family lived near Sulphur Springs, TX in the early 1900's but visited the Parker's home in Roff, OK arriving after several days travel in covered wagon. He told me they were probably buried in Sulphur Springs, TX.