In reply#4 I mentioned there were no Wm
MILLS at the address you mentioned in 1911 and asked you a couple of questions but you don't appear to have noticed my post.
I had found the census info with Wm E but thought it better to wait for further information before going down that path
Australian Electoral Roll
1903 NSW Division Lang Subdivision Newtown-Kingston
MILLS William Edward 74 Regent Street, Newtown
Coach builderMILLS Emily 74 Regent Street, Newtown Domestic duties
Perhaps the following is Wm E at Newton
Sands Directories
1892
MILLS Wm E Camden Street, Newtown
1899
MILLS Wm E 7 Angel Street, Newtown
1910, 1911
MILLS Wm E 3 Newman Street, Newtown
1912. 1913
MILLS Wm E 3 Newman Street, Newtown
MILLS Wm E 13 Brown Street, Newtown
1914, 1915, 1916, 1917, 1918
MILLS Wm E 14 Mary Street, Newtown
MILLS Wm E 13 Brown Street, Newtown
1919, 1920, 1921, 1922, 1923
MILLS Wm E 14 Mary Street, Newtown
1926
MILLS Wm E Cyrus Ave Wahroonga
1927, 1928, 1929, 1930, 1932, 1933
MILLS Wm E Snr 145 Addison Road, Marrickville
MILLS Wm E Cyrus Ave Wahroonga
Australian Electoral Roll
1930 NSW Lang/Newington
MILLS Emily 145 Addison Road, Marrickville Home duties
MILLS William Edward 145 Addison Road, Marrickville
Carriage Builder1933 Emily is no longer at 145 Addison Road, Marrickville, however their son Robert Joseph*
and wife Sylvia Madelaine are still at 139 Addison Road. Robert died in 1934.
Marriage
5608/1890
MILLS William E
NEWELL Emily
Births to William E and Emily at Newtown - there are possibly others with the 'E' in William's name omitted.
25237/1891
MILLS William G
* 25918/1893
MILLS Robert J
* 25164/1895
MILLS Alice L M
33173/1899
MILLS Mabel E
The William
MILLS who died in 1931 was 70 years of age so born c1861.
Death notice - as mentioned by Cass
http://www.rootschat.com/links/0e25/ Funeral notice
http://www.rootschat.com/links/0e26/All of the above is research is speculative however the marriage cert for Wm E and Emily should list their ages, places of birth and names of their parents. Info on reply# how to purchase a transcription. I do hope it is your William E
Cheers
Cando