is her married name HUGHES?? on the 1939Reg, it is added to her name

POSS FreeBMD Births Mar 1919 (>99%)
Buckingham Beryl M Williams Festiniog 11b 509

1939 REGISTER; England and Wales Register Cheshire Chester CB LBAA; image 8 of 32 @ancestry
Source Citation: The National Archives; Kew, London, England; 1939 Register; Reference: RG 101/3926A
Source Information: Ancestry.com. 1939 England and Wales Register [database on-line]. Lehi, UT, USA: Ancestry.com Operations, Inc., 2018.
Original data: Crown copyright images reproduced by courtesy of TNA, London England. 1939 Register (Series RG101), The National Archives, Kew, London, England.
Residence Year: 1939
Address: " Fegtan "
Residence Place: Chester, Cheshire, England
Occupation: Sorting Clerk G P C
Schedule Number: 96
Sub Schedule Number: 1
Enumeration District: LBAA
Registration district: 450-1/1A.
Household Members:
Edward Buckingham 19 Feb 1884
Margaret Buckingham 24 sep 1884?
Beryl Buckingham 1 Dec 1918 (HUGHES 10-7-45 LBA M.)
This record is officially closed.

POSS FreeBMD Marriages Sep 1945 (>99%)
Buckingham Beryl M Hughes Chester 8a 1391
Hughes George J Buckingham Chester 8a 1391