This is an unusual name so I wonder if anyone has come across it? His birth was registered 1923 in Merthyr Tydfil - but I think he lived in the FOD, at least temporarily in the 1930s, with elder brother Leslie W and father Evan William King.

Name: Ellen G Hayward
Spouse : William E King
Date of Registration: Jan-Feb-Mar 1915
Registration district: Merthyr Tydfil
Inferred County: Glamorgan
Volume Number: 11a
Page Number: 1119

siblings:-
James H King Jan-Feb-Mar 1917 Merthyr Tydfil Monmouthshire
Leslie W King Apr-May-Jun 1919 Merthyr Tydfil Wales
Evelyn M King Apr-May-Jun 1921 Merthyr Tydfil Wales

Name: Morrington G King
Mother's Maiden Surname: Hayward
Date of Registration: Apr-May-Jun 1923
Registration district: Merthyr Tydfil
Inferred County: Wales
Volume Number: 11a
Page Number: 1411

Name: Mornington King
Birth Date: 27 Jan 1923
Date of Registration: Oct 1987
Age at Death: 64
Registration district: Chiltern and Beaconsfield
Inferred County: Buckinghamshire
Volume: 19
Page: 1136

and possibly another one ..

Name: Mornington Carson King
Birth Date: 24 Oct 1900
Date of Registration: Jul-Aug-Sep 1974
Age at Death: 73
Registration district: Barrow-in-Furness
Inferred County: Lancashire, Cumbria
Volume: 1
Page: 0077

1911 10 Lanover, Row, Pontnewynydd
Walter Kings 42
Emma Kings 41
Francis Kings 14
Mornington Kings 11
Irene Kings 6
Amy Kings 10
Walter Kings 4

1900
Walter King abt 1871 Tunbridge Wells, Kent, England Head Abersychan, Monmouthshire
Emma King rabt 1872 Varteg, Monmouthshire, Wales Wife Abersychan, Monmouthshire
Kawa M King abt 1898 Garss, Monmouthshire, Wales Daughter Abersychan, Monmouthshire
Warrington K King abt 1900 Garss, Monmouthshire, Wales Sergeant Abersychan, Monmouthshire

1891
Walt F King abt 1869 Tunbridge, Kent, England Member of Crew (Member) Royal Navy, Hampshire

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Ἀριστοτέλης A Gloster Boy in the Forest of Dean ><((((*>