Sorry for the delay in getting back to you, I've not had much time to do any research.
I have now just received the marriage certificate for John and Sarah Fishwick. It was a hard one to track down as John's surname on the index was listed as Fisick. I now know that John was born abt 1822 and his father was James Fishwick (Fisick) as the certificate reads, he was a Labourer.
Sarah on the other hand has been much easier to trace. Her father was Collin Burns and her mother was Eleanor surname unknown at this stage. She was born in Maryport abt Dec 1823.
All dates have been arrived at by deduction of ages at marriage.
Any other information anyone can supply would be much appreciated