Many thanks for the information. Thanks for the link too, I will take a look at that tomorrow.
I have Charlotte Louisa Park, widow of the said Gabriel Park, died 11 Jan 1864 at the age of 68, which would mean she was born about 1796. I assume Gabriel would have been about the same age as her or perhaps a few years older. He seems very elusive as I haven't been able to find any info on him at all.
I will keep looking, thanks again.