Hi Mark,
Peathill Cemetery stone reads
Here are laid the ashes of Rev William Mercer for 47 years a most active minister of the church of Pitsligo, d 29 Aug 1767 in his 73rd year; also the remains of his most dutiful wife Ann Monroe d 19 Jan 1768 ; here also rests the body of Rev David Stephenson minister of the same church for nearly 18 years d 12 Jan 1786 age 60.
Regards
Jane