Well, if Emma WRIGHT who married Arthur BRAZIER IS Emma FARR widow (we presume?) of William WRIGHT, then she would have been 51 at the birth of the 1922 Daisy Florence, which while not unheard of is pretty good going.
The ages DO fit.
Added, although it would appear it is the 1917 one that survived. Perhaps the 1922 registration is a Re-registration for some reason.
Added this note is on freebmd
.Births Jun 1922
Brazier Daisy F. Farr Hackney 1b 678 MissMarple
The above transcription represents what is in the GRO index but it is referred to by the following entry
Births 1917 Jun: Brazier,Daisy,Farr,Hackney,1b,see j22
which implies that this is a late entry, that is an entry that has been registered in a quarter later than the event. See here for more information on late entries.
Added. Maybe they had to register her when she started school.
So my suspicions say William (if your William) was not deceased before 1917. But before 1929
There is this death
Deaths Sep 1924 (>99%)
Wright William 64 Hackney 1b 366