The Clarkes papers show the proprietor of the Wonder Bar, Promenade in 1934 was Mr Easton. The 1937 Kelly’s state: Wonder Bar (William Easton, proprietor), Café & amusement arcade, Promenade.
Before coming to Canvey the family were based in Islington. He married his wife May Louise Cleaver in St Paul’s St Pancras when they were both aged just 19 in 1918. As far as I can see they had two sons Harold Victor b 1920 d1920 and Leslie Donald b1928. William’s full name was William Thomas Harold Easton b1889 died 1955 in Romford.