John Moffett of Tonafortes in 1870 would have been son of John Moffett (1784-1859) and Mary Anne Armstrong (-1887). John Moffett snr leased this land to the Cogan brothers and there was some dispute over rent not paid. I suspect John Moffett Jnr inherited this land.
My information, although not concrete, is that John Moffett Jnr was an 'agricultural specialist' who emigrated to Australia and died a bachelor in Bymount, Queensland.
I'm not sure whether he had children.