Hi Mike,
Most of the convict indents and trials only have baic information. They don't usually have parents names etc. Sometimes if you purchase the full transcripts it can have some info but not usually enough for genealogy purposes.
There are NO Thomas FROSTS showing up on Irish Records,,so muct all be from England.

The best way to find your Frost is to trace backwards from you,,,,if you have an ancestor who has a father Thomas Frost (and hopefully a mothers name) we work from there. We can check all children to the 2 and an area they were in which helps us find his death. Hopefully there would be parents names on the death,,,if not it usually has an age.

Ok,,this is info on 1 of them
Surname: FROST
Given Name(s): Thomas
Occupation(s): Landholder
Birth Town: N/K
Region, Province: Buckinghamshire?
Birth Country: England
Death Details
Death Town: Penrith
Death State/Territory: New South Wales
Death Country: Australia
Death Date: 13 Oct 1862
Air/Port Landed: Port Jackson
Ship/Plane: Indian
Year Arrived: 16th December 1810
Surname: ROPE
Given Name(s): Sarah
Birth Town: Parramatta River
Region, Province: New SouthWales
Birth Country: Australia
Death Details
Death Town: Penrith
Death State/Territory: New South Wales
Death Country: Australia
Death Date: 17 Aug 1882
Sarah Rope's brother, Robert, was reputed to be the first white child born in Australia. Their parents were First Fleeters.
Thomas Frost was a farmer and also, in the 1820s, the local constable. He received various grants of land on both sides of the Blue Mountains and lived his time in NSW at Penrith, where he is buried. His gravestone was restored in 1988.
Children
FROST, George Purdy FROST, Henry FROST, John Thomas FROST, Mary Ann FROST, Rebecca FROST, Robert FROST, Sarah Ann FROST, William FROST, James Christopher 6

Grandchildren
FROST, Alfred John FROST, Emily Louisa FROST, George William FROST, Ida Ethiline FROST, James Michael FROST, Mary Joy FROST, Matilda Jane FROST, Thomas 6

Great Grandchildren
FROST, Bertha Isabell FROST, Eunice Eveline FROST, Ivy May FROST, Vere Maud FROST, William FROST, James Christopher 6

Great Great Grandchildren
FROST, Athol Thomas FROST, Barry John FROST, Charles FROST, Frederick James FROST, June FROST, Raymond Kenneth FROST, Shirley Margaret FROST, Wallace 6

Great Great Great Grandchildren
LAUDER-FROST, Gregory MacLennan Scholey 6(a) FROST, Stephen 6(b)

Great Great Great Great Grandchildren
FROST, Ryan 6(b) LAUDER-FROST, Cecily Catherine 6 LAUDER-FROST, Clarissa Ina 6
LAUDER-FROST, Isabella Clara 6

See if any names match up and I will see what is out and about on the others.
Kellie