Thanks for checking the newspaper indexes. I hadn't done that yet.
I located Roswell's 1812 pension summary which says widow Ellen died about 1884, so that fits. The person in Mt. Hope could be her except it says she's GER and my Ellen Bush is ENG plus Ellen did have a pension and family in the area so it seems less likely she would be in the almshouse unless I misunderstand what the almshouse was.
Ellen was Roswell's 2nd wife, Ann Canfield being 1st.