Hi,I'm sorry I can't help you with William Eykelbosch, but Ellen Birkbeck Eykelbosch (b. 6/10/1854) married Thomas Edward Green on 24/12/1875 in Eagle Hawke Victoria. they had 4 children, Harriett, Ivy Maude, Thomas Arthur and Robert Thomas C. (Robert is great grandfather)
Thomas died in 1883 and Ellen went on to marry a Birkbeck ?? relative of Ellen Birkbeck Eykelbosch?? They then had six children (I think)
I have come to a bit of a dead end with Thomas Edward Green (Ellen's 1st husband) too.
Best of luck with your search. Yours Jenny.