That would be my best guess based on age and taking place in Shapinsay. As with the marriage records, until you order the records, there is no way to know for sure and even that may not help in every case.
Margaret DRUMMOND F C: 1761-01-18 James DRUMMOND Margt. NICOLSON Shapinsay, Orkney, Scotland C110282
Christian DRUMMOND F C: 1764-08-23 James DRUMMOND Margt. NICOLSON Shapinsay, Orkney, Scotland C110282