I’ll try to help. To add a DOB, I believe Richard Franklin Williamson was born 1874 in Indiana per 1910 census in Tama County, Iowa.
1910 CENSUS Tama County, Iowa Richard F. Williamson 35 born about 1874 Cora M 28 William E 7 Elizabeth 6 Clarence 3 Cimon R 7 months [ prob = Vernon Richard?] William Mutch 19
1915 in Tama County, Iowa
ca 1918 Richard Franklin Williamson registered for the WWI draft in Tama County, Iowa
1920 in Tama County, Iowa
1930 in Tama County, Iowa
This could be “your” Richard as a boy:
1880 Hickory Grove, Jasper, Iowa William Williamson 42 born abt 1838 Indiana, father b Ohio mother b Indiana Elisabath Williamson 37 father b Virginia mother b Ohio MOTHER: Ann Ayers Isora L. Williamson 12 b abt 1868 Indiana [married Emory F Brown? and lived Jasper Co?] Kichoree Williamson 6 [ might = Richard] b abt 1874 Indiana Leroy Williamson 4 b abt 1876 Indiana Edward Williamson 1 month b abt 1880 Iowa Ann Ayers 60 widowed, mother-in-law, born about 1820 in Ohio, parents b Ireland