You may already have these which are some HOYs on the electoral roll mostly in Cessnock. Occupations are the same in each listing.
1930 Arthur HOY, miner and Nellie, home duties, Carl St Muswellbrook,
1933 Arthur HOY Junior, miner, 4 Vernon St Cessnock
1936 Arthur, Arthur Jnr and Nellie 106 Allandale St, Cessnock
1937 Arthur Jnr at Allandale St, Arthur and Nellie at 1 Chapman St Cessnock (perhaps A jnr had not changed his enrolment details)
1943 Arthur, Arthur Jnr and Nellie at 1 Chapman St Cessnock (once again - looks as though A jnr hasn't changed his details as Sylvia is listed in Nth Sydney)
1943 Sylvia Florence Maud HOY, home duties, 85 West St, Crows Nest (subdivision North Sydney)
1949 Arthur and Nellie at Chapman St
Arthur Jnr and Sylvia Florence Maud HOY, home duties, 81 Congewai St, Cessnock
1953 Nellie and Arthur at 3 Chapman St (it deifinitely had No 1 on earlier records)
I can't see Arthur Jnr or Sylvia on 1953 roll.
Judith