Barbara Robertson of Dunnet

[Bonnie Parker-Duke]

I'm looking for any information on Barbara Robertson, born about 1788 in Dunnet. She married [?] earlier but then married David Harper of Wick and together they had children Margaret (1823), John (1824), William (1826), David (1828), Catherine (1831) and Alexander(1838). William emigrated to North America about 1854 and the rest of the family in 1856. I would appreciate help with any info on her parents, first marriage and children.

Thank you.

Bonnie