Difficult to make much progress here, but I wonder if that is because information in the opening post is not quite correct.
1939, East Ashford, Kent at Gipsy Camp Lane are James BRAZIL born 1877 and Mary A BRAZIL born 6 Aug 1870 and some younger BRAZIL family members. Note there is something written to the left of the entries about Police and checks – not clear unfortunately.
Also in same Gipsy Camp Lane is the HILDEN family. Maria HILDEN born 1901, I think might have been a BRAZIL before marriage.
Same address is Eleanor BARTON born 1st March 1899 – Could this be “Lean”. With her are a number of BARTON children born 1920-1933 in Kent area with mother’s maiden name BRAZIL on registrations. A couple of them show up with Eleanor here in 1939 (2 sons are dealers) and other records are closed.
On someone’s Anc* tree there is Billy / William Barton (1929-2016) and a younger girl Letty (1931-2020) as being children of Joe Lee and Lena Brazil.
I haven’t yet worked out if or how everyone at this same address is related. Not even sure if I am completely off track here. The Anc* tree may well be wrong, but the 1939 document in Ashford is of interest I think.
Have run out of time at the moment.