The Genealogical Record of the Barnum Family calls her Anna Goodsall. The same source also mentions an Anna Goodsil, originally shown as the wife of Bethuel Barnum, the great grandfather of Jabez, but later removed by an errata notation. Descendant Dorothy Barnum indicates that Jabez Barnum married Anna Larrabee Goodsel.
US General Land Office Records, 1796-1907 about Anna L Barnum. Name: Anna L Barnum; Issue Date: 1 Oct 1855; State of Record: Iowa; Acres: 80; Accession Number: IA0820__.165; Metes and Bounds: No; Land Office: Fort Des Moines; Canceled: No; US Reservations: No; Mineral Reservations: No; Authority: April 24, 1820: Sale-Cash Entry (3 Stat. 566); Document Number: 14442; Legal Land Description: Section 14 Twp 89-N Range 19-W Meridian 5th PM Counties Hardin. By President Franklin Pierce.