My great, great grandmother was Harriet Elms who married Wm. Harris in Boston June 3, 1868. He was born Gibson, PA about 1836 to Henry H. and Catherine Harris. Harriet was born about 1840, Boston MA to William and Clarissa Elms. Daughter of Wm. and Harriet was Sarah Elizabeth Harris, born January 17, 1870 in South Boston. Both parents appear in Boston Census 1870 but not 1880. And Sarah Elizabeth appears in Chicago IL census in 1880 as neice of James and Clara Maxwell. Can anyone help on any of the above re their earlier ancestry OR what happened to Sarah's parents and the Maxwell connection?