Perhaps Ann's death year is errant. If Ann died on 18 Jan 1679, then the birth years of her children aren't plausible.
John Davis, Esq. b. circa September 02, 1681
Hannah David b. April 1683
Josiah Davis, Jr. b. circa August 1687
Seth Davis b. circa October 1692
Ruth Scudder (Davis) b. February 04, 1694
Sarah Taylor (Davis) b. circa 1697
Jonathan Davis b. circa 1698