Hi, there
Are you still trying to trace these people?
This may be Isabella. It is the only match I can find on 1861
36 Brooke Street
James Tarlton 1795 Whitechapel, Middlesex, Head Tackle Maker Holborn St Andrew Middlesex
Isabella Tarlton 1805 Whitechapel, Middlesex, Wife Ostrich Feather Maker Holborn St Andrew Middlesex
Mary Tarlton 1844 St Andrew, Middlesex, Daughter Holborn St Andrew Middlesex
And, no, I didn't make up Isabella's occupation
RG9/186 Holborn Folio 105 Page 23
Tricia