The source of the marriage information is not mentioned in the online tree.
I am hoping there death notices might better assist me with research into these 2 sisters as I don't know to much about them, there husbands or children.
There are numerous files on NAA for William and Matilda
http://www.naa.gov.au/collection/search/index.aspxThere are many mentions about William and Matilda in the Broken Hill newspapers of the day.
http://trove.nla.gov.au/newspaper Search using HADAD and NSW.
A few...
This is the marriage of William's sister. Confirmed by her death and funeral notices.
7084/1931
NADIFF Cahill H
HADAD Ranee
District Broken Hill
http://nla.gov.au/nla.news-article141734890 1941
NATURALISATION NOTICE I WILLIAM HADAD. of 64 Iodide Street, Broken Hill (nationality Lebanese), born at Mt. Lebanon. Syria, and residing seventeen years In Australia, now residing at 64 Iodide Street, Broken Hill, New .South Wales, intend to apply for NATURALIZATION Under the Nationality Act, 1020-1926. '
http://nla.gov.au/nla.news-article141690219 1948
Mrs M
HADAD purchased a business
http://nla.gov.au/nla.news-article141239085 22 Feb 1950
Miss Julia Johns, of Dunedin, New Zealand has arrived in Broken Hill for a visit to her sister, Mrs. M. Hadad, of 64 Iodide Street.
http://trove.nla.gov.au/ndp/del/cite/16302933/141442091 1952
Engagement of Mr and Mrs HADAD’s daughter
Search the female
HADAD marriages at Broken Hill on NSW BDM
http://www.bdm.nsw.gov.au/Pages/family-history/family-history.aspxAustralian Electoral Roll
1933
HADAD Matilda 135 Oxide Street, Broken Hill HD
1935
HADAD Matilda Johns 346 Mica Street, Broken Hill HD
1958
HADAD Matilda 64 Iodide Street Broken Hill HD
HADAD William 64 Iodide Street, Broken Hill Shopkeeper
1963
HADAD Anthony Brian 64 Iodide Street, Broken Hill Motor Mechanic
HADAD Matilda 64 Iodide Street, Broken Hill HD
HADAD William 64 Iodide Street, Broken Hill Shopkeeper
1968
HADAD Anthony Brian 64 Iodide Street, Broken Hill Motor Mechanic
HADAD June Phyllis 32 Iodide Street Broken Hill HD
HADAD Matilda 64 Iodide Street, Broken Hill HD
HADAD William 64 Iodide Street, Broken Hill No occupation
1977
HADAD Anthony Brian 32 Iodide Street, Broken Hill Motor Mechanic
HADAD June Phyllis 32 Iodide Street Broken Hill HD
HADAD Matilda 64 Iodide Street, Broken Hill HD
HADAD Sheree Marie 64 Iodide Street, Broken Hill HD
HADAD William 64 Iodide Street, Broken Hill No occupation
1980
HADAD Anthony Brian 460 Crystal Street Broken Hill Motor Mechanic
HADAD June Phyllis 460 Crystal Street Broken Hill HD
HADAD Matilda 64 Iodide Street, Broken Hill HD
HADAD Margaret Marguerita Joan 576 Silica Street, Broken Hill HD
HADAD Sheree Marie 64 Iodide Street, Broken Hill HD
A glowing version of William's life

. Wife Matilda not even mentioned!!
http://goose-view.com/immigrationplace/story/wilham-william-hadad/Photo of their headstone with their children named.
http://www.rootschat.com/links/01gqj/Cando