Thanks for the info about the church and cemetry.
Charlotte Knight gave birth to my wifes grand-father on 1st January 1900. On the birth certificate the mothers name is Charlotte Knight (formerly Kime).
Unfortunately, on the 7th January 1900 (seven days after giving birth) she died. I have her death certificate and the cause of death was acute pneumonia. I expect it was related to the childbirth the previous week.
I also thought that she might have been married before, and that might explain why I can't find her marriage certificate for her second marriage. If Kime was her maiden name then it would have changed to something else after her first marriage. Since I don't know what it changed to then I can't find the marriage to John Knight.
However, if Kime was really her maiden name then I'd expect to find a birth certificate in around 1863/4. She might have been born somewhere else. I've checked the Scottish BMD index.
Unfortunately, her husband (John Knight) has quite a common name so it is difficult to find his birth or death, so I was hoping that their marriage certificate would give me some clues.