Hi again, John Thomas and Sarah Quinton had at least one son:-
Thomas Edward May 12th August 1855 St Michael, Crooked Lane, City of London Father John Thomas May occ Labourer Mother Sarah address 3, Fan Court.
Thomas E can be found in 1861 onwards, and on the 30th November 1879 Holy Trinity, Newington he married an Alice Emily Cole
The 1861 census:-
Sarah May 41 Widow b Suffolk
Joseph 11 b City
Emma 7 b City
Thomas E 5 b City
Census Ref RG09/227/48/26
Can locate baptism for Emma but Joseph?
Keyboard86
EDIT Joseph May Sept qtr 1849 City of London v2 page 175 mmn LEGG
So he was the son of John Thomas & Catherine.
Baptism 17th June 1849 St Magnus the Martyr Father John Thomas May occ Porter Mother Catherine address 4, Fan Court, Wilks Lane