Sorry I have no information prior to the Dunning/Kilton marriage but I do have information on Rosamond Dunning bap 16 January 1764, Leake, Northallerton, Yorkshire.
Rosamond Dunning died 1 March 1800, Stanley, County Durham, England, buried 4 March 1800, Tanfield, County Durham.
She married Thomas Freick, 23 December 1787, Kirby Sigston, Northallerton. Thomas Freik was a travelling salesman.
Thomas Freik was bap 23 March 1756, Lanchester, County Durham.
Thomas Freick died Dipton, County Durham and was buried Tanfield, 29 April 1837.
Parents of Thomas Freik, John Freik and Catherine Cheesemond.
I have Snowdon's (Snowden) bap but did not know what happened to him.
The Freiks are 1/2 related to me. My 3rd Great Grandmother Phoebe Garthwaite Bowes married a William Freik after the death of her husband in a mining accident.
Have you any details on Snowdon, what was his problem giving him a free passage to Tasmania and marriage, children and death date in Tasmania or other place in Australia.