I am a descendant of Henry Allen Bollen who moved to Arkansas from Alabama. My family has done some research before me and there is a rumor that Henry's father was named Robert and his dates would seem to coincide with the information you posted. Also, I have found some great uncles who ventured off into California: Lee Roy Bollen, who after his wife had died; and Clarady, who moved sometime after 1930. I also have info on brothers who went to Oregon, Oklahoma, and Florida.