It’s now unraveling. The Horatio head of house that widow Susanna is living with is her grandson! Correction her son
I’m not sure how but he ended up in Washington state! See his FindAGrave. A civil war vet. Birth location matches
MILLS, HORATIO.—Age, 26 years. Enlisted, October 11, 1861, at Minerva, to serve three years; mustered in as private, Co. C, November 20, 1861; re-enlistedi as a veteran, December 20, 1863; wounded and captured in action, October 27, 1861, at Boydton Plank Road, V a . ; paroled, February 17, 1865; mus- tered out with detachment, M a y 30, 1865, near Washington, D.C.
see https://dmna.ny.gov/historic/reghist/civil/rosters/Infantry/93rd_Infantry_CW_Roster.pdf