What I have on your family is up on worldconnect,
http://wc.rootsweb.ancestry.com/, in database "trurocoads".
It takes the family back as far as we can go. I dont have Matilda there but I think someone else told me about her - in fact I think I communicated with a cousin of yours a few years ago.
Biographical Index of South Australians 1836 - 1885 Vol I, p 288 column 3.
Peter Coad, b Con, Eng c.1828 d before1878. arr 1858, Melbourne Occ Miner. res Wallaroo. rel Methodist
m Rosevia b Con, Eng c.1828, ch Wm b Con, Eng c.1856, Elizabeth b Con, Eng c.1858, Mary Jane Bitmead 1860
Died of inflammation of the lungs (miners disease)
John Leslie Coad shot his wife, the transcript is in 19 Ap 1921 Argus. My colleague Eddy Roadbug holds birth certificate transcripts of his 10 children