Thanks guys I'm working my way through this atm, Mary Brown her baptism states John & Jane Chisholm

So I really do think that is a daughter.
I have done a birth search on scottishpeople for a plus/minus 5 year from 1819 and the only one that shows up is:
1 02/08/1817 WILLIAMSON JOHN DONALD WILLIAMSON/MARTHA ROSE M INVERNESS
and a death:
1 1855 WILLIAMSON JOHN M 38 INVERNESS BURGH /INVERNES which shows the following:
