On Wednesday, 7 February 2018 15:45:37 UTC, Bryan Morris wrote:

It's been a long time since I was a Haringey Councillor but Mary took
over from her husband Frederick who was an alderman then a Councillor
from 1952 to 1982 . She was a Councillor 1986 - 2002 so between them
they served 50 years (4 years break)

That is a tremendous achievement, and one that those in whose power the naming of new roads resides would want to commemorate as they would want their own council longevity memorialised by their successors.