Summary: What’s the Gaelic for MacNair/Macnair? Well, in Rossshire it’s Mac ̓an Uidhir. It means Mac Iain Uidhir. That’s the old form of Mac Iain Odhair or “the son of John of the sallow complexion”. Accompanying text is available in both English and Gaelic at bbc.co.uk/litirbheag.