« Reply #6 on: Monday 11 November 19 18:47 GMT (UK) »
As others have said only the person can tell you.
However just to note the 1939 register information on DOB is secondary information which means it can't be relied upon as fact, only the birth certificate is primary for DOB.
My great grandmothers DOB on the 1939 register is actually her baptism date, not her birth date
Leicestershire:Chamberlain, Dakin, Wilkinson, Moss, Cook, Welland, Dobson, Roper,Palfreman, Squires, Hames, Goddard, Topliss, Twells,Bacon.
Northamps:Sykes, Harris, Rice,Knowles.
Rutland:Clements, Dalby, Osbourne, Durance, Smith,Christian, Royce, Richardson,Oakham, Dewey,Newbold,Cox,Chamberlaine,Brow, Cooper, Bloodworth,Clarke
Durham/Yorks:Woodend, Watson,Parker, Dowser
Suffolk/Norfolk:Groom, Coleman, Kemp, Barnard, Alden,Blomfield,Smith,Howes,Knight,Kett,Fryston
Lincolnshire:Clements, Woodend