Birth of William John Seddon Hughes, mother's name Smith, registered Q3 1875, district of West Derby and Toxteth Park
Death of William John Seddon Hughes, age 62, registered Q4 1937, district of Worthing
HUGHES—November 6, suddenly, at his residence, Elmstead, Buckingham-avenue, Shoreham-by-Sea, WILLIAM JOHN SEDDON, beloved husband of Lily Hughes, and eldest son of the late William G. and the late Mrs. E. S. Hughes, of Whaley Grange, Formby.
(Liverpool Echo, Mon 8 Nov 1937 & Liverpool Daily Post, Tues 9 Nov, see FindMyPast/BNA or Newspapers.com)
HUGHES William John Seddon of Elmstead Buckingham-avenue Shoreham-by-Sea Sussex died 6 November 1937 Probate Liverpool 22 January to Reginald Hamilton Hughes cotton salesman and Cyril Vaughan Hughes poultry farmer.
(Probate index, 1938)
With more info about his widow Lily you could find her death and then look for an obituary, burial or probate.