Having trouble finding any court/convict records apart from what was posted before..(may be able to find more details on thos tho)
More info about Thomas Frost "Indian"(basically full family tree and detailed information)
http://thomasfrost.bravehost.com/

OK from the marriages sent yesterday

It is FROST, Thomas. Per "Baring", 1819
that married
CAPP, Elizabeth. Per "Lord Sidmouth", 1823

Of course you have info on Thomas "Indian" and Sarah ROPE.

FROST, Thomas. Per "Minerva", 1824 I would say married
O'BRIEN MARY (due to the married in Berrima district and his TOL being considered by Berrima Bench and also he would have applied for TOL 1842 to be married 1843)

Checking for the 4th Thomas

FROST, George. Per "General Stuart", 1818
1819 Jan 13
On list of convicts disembarked from the "General Stuart" and forwarded to Windsor for distribution (Reel 6006; 4/3499 p.260)
1823 Jul 23
Servant of James Mudie. Permitted to proceed from Windsor to Mudie's farm in the district of Newcastle; APPEARS as John (Reel 6010; 4/3508 p.696)
1823 Aug 22
Servant of James Mudie. Permitted to pass with sheep from Windsor to the District of Newcastle (Reel 6011; 4/3509 p.111)
1824 Oct 2
Overseer to Mr Mudie. Re rules for Mr Mudie's farm (Reel 6068; 4/1811 p.169)

FROST George - General Stewart 1818 39/212 11 Jul 1839 36/1415 [4/4238] 967 On the recommendation of Patrick's Plains Bench
FROST George - General Stewart 1818 40/0348 21 Aug 1840 36/1415 [4/4240] 968 On the recommendation of Singleton Bench
FROST George - General Stewart 1818 45/094 CP 1 Feb 1845 [4/4446] 781

OK,,I have to go for now,,
Good Luck
Kellie