Cazay,
More great finds!!
You'd have to suspect that this Charles WILKINSON in Cleveland St, Redfern could well be the right one - though Clerk at the Treasury sounds a bit up-market.
I guess the 1856 marriage cert of Charles WILKINSON & Jane HEASMAN would help. And the records of their children.
A Charles WILKINSON & a Jane had, it seems:
1858 A male b & d Chippendale
1860 A female b & d Chippendale
1861 A male b Chippendale
A Walter WILKINSON, child of the above couple, born Sydney, died aged 11 months in Victoria in 1862.
1864 A child (no name or sex) b Redfern
Redfern and Chippendale being adjacent suburbs ...
1867 Laura born Emerald Hill, Vic
Were Charles & Jane (or at least Jane) going back and forth between Sydney and Melbourne?
A child, Elizabeth Jane ANDERSON was born in 1871 in Vic, parents Peter ANDERSON & Jane Elizabeth
AYLMORE.
You have to love the Thomas RICHENS punch-up! Such fun if it is John/Thomas RICHINGS (sorry Lu!).
Lu, perhaps you can put various Oz certificates on your wish list for Santa

Though perhaps your relatives might not be too happy about what is being disclosed on this thread.
Cazay, oh dear - I'd better get to it and update my summary! I'll never keep up with the to-ings and fro-ings otherwise.
JAP
PS: Annie, I just read the letter - it really does pull at the heartstrings, doesn't it.