Hello Kay,
Have a look at this link - Saltoun and Bolton Church. It also has information re Pencaitland.
ndhm.org.uk/
I have a Jean Paxton married to Peter Winton at Saltoun in 1790. Unfortunately, cannot find their deaths. However, the good news is that the minister at Pencaitland gave extra information at baptisms and marriages e.g. witness at baptism or marriage would show the relationship - uncle to the child, brother of the bride. I have been able to make links using the information given.
Mags