Hi Thanks for the birth record which shows me there that the f was for female, as no name has been given to the child.
Thanks also for the convict records, I had seen them but have been undecided if this was the same William Koyle/Coyle. However I haven't found any other William Koyle, and no other information about him either.
I also found a death on trove for an Ellen Sweeney in Hobart, 26-2-1917 age 83 years, relict of the late James Sweeney. Although the marriage record said she married John Sweeney, she was 22 years old (so born 1834) then and the age at death matches that exactly. But she died a bit out of the area of where she married and had the children.
So I'm not sure if i go with the Ellen Sweeney or the Ellen Caffell death, even though an Ellen Behan has had children to William Coffee and Henry Caffell as well as Sweeney and Koyle and the informant on the Caffell death of H. Howard, shown as 'a friend' could have been her son in law Henry Howard who was living at Nook about that time.
The Caffell death says she was 58, which would make her born 1838, so she could have lied about her age when she married Sweeney.
Anyway thanks and I'll keep looking but would gladly receive any further information if anyone has any.