This is an old puzzle now - but I am trying to clear up the NSW Coads and although they are not so numerous, there is quite a tangle there regarding the ten children of a William and Mary Coad - can see two or three completely different trees out there.
Firstly - William John Coad married Mary Turner in Sydney 1879. He is said to be W J 1842 Liskeard, son of John Coad 1810 Plymouth the plasterer.
In the meantime we have William Edward Coad 1855-1910, probably the son of Peter and Rosevia, who deserted his wife Matilda Russell in SA, married Mary Ann Hince in Rockhampton 1885 (apparently bigamously) had a son William Peter Coad in 1890 Queensland, then turned up in Sydney and according to some started having many more children
So which William and Mary Coad are the parents of
Elizabeth, b 1880
Wm John, b 1883
Frances M, b 1886
Alice M, b 1888
Charles S, b 1891 d 1965 m Eileen Maude Lyons, 1912
Henry E, b 1893 d 1931, m Margaret M Boyce, 1916
Lilly F, b 1896
Besse V, b 1904
Arthur Victor, b 1898 d 1965, m Josephine M King, 1922
Robert Walter, b 1899 d 1966, m Lucy May Harper Ford, 1927
Has anyone successfully divided these children between the two couples? The first four must be William John + Mary, and are listed as such. The last 5 are [William and Mary A] so appear to be teh second couple. Charles is uncertain
Eddy O'Leary I see already ran this tangle past me here back in 2007, when the Coad project was just starting out.