If I am correct, I think that this is family of Cowin as required by you living at 137 Market Street, Hoylake on the 1911 Census. However the surname is misread and mis-transcribed as Crown. Walter Cowell Cowin or as it is correctly listed on Ancestry listed as Walter Cowell Crown. Walter Cowell Coin was born in Chester in 1910 and is Seven months old on the 1911 Census. His birth certificate was issued Oct-Nov-Dec Wirral,Cheshire, 8a,403. He married in 1947 to either Ann Williams or Ann Poole, 10a, 1358 and died Sept. 1959. If I am correct at that stage he was listed as an Electrical Engineer, all in the Wirral Cheshire. From this and details on his father John James Cowin of 137 Market St., Hoylake Cum West Kirby. It should now be possible thanks to the correction of the reading of the surname, to extend back your coverage of this family and establish his occupation and that of his father from as you do so.