Hi Kiya!
Am currently in the process of checking my own records (in Adelaide, South Australia - I am now in Melbourne), but believe your Thomas Holland might be my g.g.g.g.grandfather! I am descended from a T. Holland who was from Truro, Cornwall. His son, William, emigrated to South Aust in the early 1860's (if my memory serves me correctly), and was a shoemaker in Adelaide. I know that there are records of properties owned by (my) Holland family which were discovered by another family member a few years ago. No doubt you will be interested in those if you haven't got them already. Will let you know if we are looking at the same family! If so, would be most interested in any info you have