This really is overwhelming, thank you all of you.
So...
Sands Trades Directory 1891
Solicitors
WILLIAMSON John and Son 163 King St
Williamson and Williamson 146 King St
Thomas M Williamson, 79 Pitt St, Redfern.
Cheers, JM
According to their marriage notice, Mark A Williamson was the son of William Williamson, deceased, so this would likely not be him - may be a relative though.
Dundee, Majm, Jamjar, Sparret, all of you, thank you! I have so much to sift through now!!! Am wondering though, Jamjar - any chance of a bit more information on the David Thomas Burt buried in Waverly, and his family? I have found a David T Burt born in 1868 in Richmond River so William and Sarah. Also got a marriage for David T Burt and Margaret WOLLBACH in 1888 in Lismore. If I know how old he is I may be able to see if there is a connection. As far as I am aware, Minnie was the only child of John James Burt and Ann Jane Williams, but I may have just missed something, so I had better check.
Majm, if I find a connection to Michael I will certainly let you know. I did have some articles somewhere, but Michael doesn't ring a bell at the moment...
Thanks again, you've all made my day.