I found an interview with Hercules Davis Benbow's daughter online at a Sacramento website. Using info from that interview and other records, it is apparent that Hercules Davis Benbow was born on 26 Dec 1892 in Union Springs, Bullock County, Alabama (based on World War I & II draft registrations, census records, Social Security Death Index, etc.). The family lived in Memphis at one time, but he wasn't born there. He had a son with the same name, among other children. Union Springs is very close to a family group that I know about. I'll need to look at more records about that group to see if I can figure out how he connects.