George SINCLAIR Married Margaret GOWDY 17 August 1802, Orphir, Orkney, Scotland
(just made it too the Altar!)
Presuming they were both born in Orkney which is hard to confirm, there are these possibles;
Margaret GOUDIE was Baptised/Christened 07 March 1784, Orphir, Orkney, Scotland.
Parents, Joseph GOUDIE and Girzal CALDER
George SINCLAIR was Baptised/Christened September 1782, Orphir, Orkney, Scotland.
Parents, William SINCLAIR and Jannet HOURSTON
Source of all Records Familysearch.Org