Thanks Alice for the link to "Litir gu Luchd-Ionnsachaidh" by Ruairidh MacIlleathain. Ruairidh writes that Rev Dr Tormod MacLeòid (1783 to 1862), who was born in Fionnairigh, wrote the lyrics in English as "Slán le Fiunary", although they are now better known in the Gaelic translation by Gilleasbaig Mac na Ceàrdaich (Archibald Sinclair). Mac Leòid was himself a Gaelic speaker and scholar and founder of Gaelic-language publications. He also produced, in collaboration with an Irishman, a book of psalms in Irish Gaelic for the Church of Ireland, and he did much to raise awareness of the plight of poor people of the Highlands.