I had a look for a marriage on the OPR's on SP but couldn't see any. I also had a look for Williamsbirth but again nothing. The only records I could see for Baptisms 1800-1825 were these 2
19/10/1818 COLLYER JANET daughter of WILLIAM COLLYER and JANET PATERSON at Dunfermline FIFE
02/01/1820 COLLYER MARY daughter of WILLIAM COLLYER and JANET PATERSON at Dunfermline /FIFE
Maybe the Colliers (sp) were dissenters or RC's