I have found on FamilySearch the birth record of Ellsworth Arthur Morales on 11th June 1929 (the correct date) the son of Ethel Morales (no father) at 2 Little Water Street, Kingston, Jamaica. The birth was registered by Octavius Clarke, the occupier of 2 Little Water Street. I think that this is his birth. When he came to England in the 1950's he was using the surname Clarke.
Grace