Handson - May I suggest that you get two certificates?
George's birth certificate ref. details as shown below:-
Births Dec 1921
Greenwood George E Hunt Luton 3b 609
George's marriage certificate ref. details as shown below:-
Marriages Dec 1939
Greenwood George E Moon Thanet 2a 5392
Moon Joan M Greenwood Thanet 2a 5392
You can then check whether the E name is the same on both certificates and also the father's name.
He must have married young! Just 18! If this is the right one

The birth and marriage Georges could be two different people.
