So, Charles Robert JACKSON and his mother, Meta Sophia JACKSON were both enrolled in 1930 in respect of 8 Wattle St, Haberfield AND 39 Matilda St Bondi.
Also on the 1930 electoral roll at Haberfield was:
Jack Cathels Iberia STEEL, Addiscombe, Tressider Avenue, Haberfield, a draftsman
Myee Lottie STEEL, Addiscombe, Tressider Avenue, Haberfield, home duties
Sands 1930 gives J C STEEL at 26 Tressider Ave, Haberfield
NSW BDM gives marriage 1916 for Jack C STEEL and Myee L GARLAND. #13016
Cheers, JM