Hi there,
Yes, it was a trial in Sydney, a civil trial, with a civil jury! It would be among the first of the civil trials by jury that the Crown lost. Most likely it was the verdict of the jury that meant it was important for settlers in both VDL and NSW.
Re Ann Thomas,
I've just realised I should have posted this reference perhaps it explains itself...
COOPER, Robert. Of Parramatta
1820 Jul 12, Oct 11 its a Petition on behalf of son of Ann Thomas, to Male Orphan Institution, referred to Magistrate or Chaplain (Reel 6040; 4/400 pp.21-2)
1821 Jan 10
The child reported to have a father-in-law and mother alive and not object for Male Orphan Institution (Reel 6040; 4/400 p.24)
I'm fairly certain that the expression "father in law" was not as strictly meant in those times as say it would today. It could indicate a step relationship or, perhaps an informal adoption... The child was not eligible for the orphanage, (or so Robert Cooper seems to have claimed) so where did that child grow up, and with whom.... his mother and father in law perhaps.. I have YET to find Ann Thomas AFTER 1820 ....

and err.... what year do we find CCMcN's name first appearing ... err AFTER 1820 , yes we have Thomas Ransom with a WIFE earlier, but NOT with a name...
Could the son be the one registered in 1817, or the one in 1815... not sure, but those ladschristenings are at NSW BDM online, and no father's name appears in that index...
Its just a thought, and could be a red herring, but ... there's also convict, Ann Thomas or Smallman who was in VDL last noted on the 1822 list, (Sorrell's list). She arrived VDL on that 1814 voyage of the Kangaroo....
So was CCmcN known to AT or perhaps previously known as AT or perhaps tis just a red herring. Not sure, but I thought I should let you know where I was at re looking for C N of the branded cattle fame !
Cheers, JM EDITING TO ADD, AND I SEEM TO REMEMBER THAT CATHARINE WAS NOT FOUND IN 1822 MUSTER ....