Yes that could be as said above with the names but Louisas age is quite consistent in all the censues which puts it around 1821 she was born not 1813?
Welsh Lady
I have a death for a Louisa Phillips as follows:
Name: Louisa Phillips
Estimated birth year: abt 1813
Year of Registration: 1874
Quarter of Registration: Apr-May-Jun
Age at Death: 61
District: Hackney
County: Greater London, London, Middlesex
Volume: 1b
Page: 252
Thats where I got the birthyear from....

I haven't seen another Louisa Phillips in the Hackney area.
Tyrone