Can't find anything about William Alfred Nichols, but I have found the following about Thomas Sayer Nichols
Thomas Sayer Nichols bapt St Paul Edmonton 12/06/1836, in brackets 14th May, poss birth date
father Thomas mother Harriet
Thomas Sayer Nichols
of Southgate
Thomas Sayer Nichols born 1836 buried St Paul Edmonton 19/05/1839 aged 3
Thomas Sayer Nichols born 1803 buried St Paul Edmonton 22/05/1853 aged 50
This may or not help you
Regards
Louisa Maud