In your previous thread you said:
"My Grandparents names are Edward ernest enfield he married Doris Edith Jolliffe in 1931."
That marriage is in the index at FreeBMD
http://freebmd.rootsweb.com/cgi/search.plbut there is no birth to match Edward.
I suspect he may have been born Ernest Edward Enfield in 1909 in Colchester, and gone by his middle name.
(My grandfather born in 1901 did just that, and married as Edward as well.

)
I believe that EEE's parents were John William Enfield and Emily Alice Davey who married in Colchester in 1898 ... so I appear to have come up with the same suggestion as someone else did in a previous thread I couldn't find ...
If you don't have your grandparents' marriage certificate, that is the thing you absolutely need.
Unless there were some unusual circumstance (like your Edward Ernest's parents not being married), that certificate will tell you his father's name, and also his own age.
Ernest Edward Enfield born 1909 died in 1977 in Colchester.
>>>> edit -- my confusion: the name at death was
Edward Ernest Enfield - but the date of birth matches the birth of
Ernest Edward Enfield.
Doris Edith Enfield born 1910 died in 1978 in Colchester.
That EEE would seem to be a good match. But only your grandparents' marriage certificate will give you the info you need - unless your mum can also tell you her grandfather Edward's date of birth, for instance.