Eric Being a direct descendant of Edward Doty of the Mayflower and a avid Genealogist I thoughtmight do some checking. The following items I found.
1900 Census index of Iowa (FHL #1243736): Warren DotyWMar 186238Iowaof Ft. Madison, Madison Twp., Lee Co., Iowa308 Fifth Street Sophia DotyW WifeMay 187921Iowa
Marriages [Lee Co.](North, Ft. Madison) Vol. 5 [1875-1883] pg. 529 (FHL film #959192) Warren Doty (21) & Anna La Due[Dew] (18) Lic. 22 Mar 1883 Md. 22 Mar 1883 Ft. Madison by J.E.Corley (Pastor M.E. Church) mentions S.J. La Dew [her father]
Marriages [Lee Co.](North, Ft. Madison) Vol. 7 [1890-1897] pg. 274 (FHL film #959193) Warren E. Doty (30) & Lula Cicle (19) Lic. 26 Sept 1893 Md. 26 Sept 1893 Ft. Madison by G.E. Huston
Register of Births (Lee Co., Iowa) Vol. 1-3 [1880-1900] pg. 76 (FHL film #959199) #132 Doty, Daisy Belleb. 1 Apr 1884 Ft. Madison father: Doty, Warren (22) ILLmother: Doty, Anna (19) IA
Illinois 1870 Census Index (FHL CD #185) NO WARREN DOTY as a child listed.