Great synopsis , Wiggy, and I spotted the deliberate mistake- you left out 1837 as the Martin Cash date! What about the Hermit in Van Diemens Land reference, the courting of Catherine by Fred. 98%, Top of the Class.
The 1822 Hobart Town Muster of Women does not include a Ransom or a Mcnally.
It includes 23 Catherines - 7 were born in the colony, 7 came free, and 9 were freed by servitude.
5 of the Came Free arrived Hobart after 1819, of the other 2 one arrived 1803 ( Potaski) and is accounted for- leaving Catherine Dogherty , who was not include in the 1818 Muster Free women
Of the 7 Born in Colony , only Belbin is unaccounted for and not in 1818 Muster- 4 were in 1818 muster as married ( Clarke(m Morgan) Crahan, Potaski(nee Sullivan) Tedder(nee Cullen), Wade( nee Morgan) , while Crahan and Williams were not married but were listed in 1818, so would have been known under those names
of the 9 Freed by servitude, Pindergrass (arrived1790) and Murphy (1791) are too old, 4 arrived on the Catherine (!) in 1814, and would have been well known under their names(Coghlan, Egan,O'Brienand Quinn), leaving Kingswill (arrived 1815-so knownunder that name) and I think Wiggy vouches for Catherine Kearney.
But... and I have noted this in the margin before("where she come from?") but apparently not followed it up, which I will do after posting this- "Mrs McAnley Came free Calcutta 1803". She does not appear in 1819 Land and Stock Muster as a land owner, nor in the 1818 Hobart muster of free women. How has this slipped through?
David