Hi
You say you have Charles in 1861 and that Sarah is dead .... there are 2 possibilities in the Uxbridge area for an Emma in 1861
Living Chapel Row, Uxbridge an Emma born 1845 with mother Sarah Ann married but husband not present bn c1811 Uxbridge, also a son Charles age 9
OR at London Street, Uxbridge
Emma J bn 1843 at Hillingdon with mother Elbary Ann bn 1829 a widow also bn Uxbridge, also a son James age 12 bn Hillingdon.
are either of these yours?
Rosie