The accompanying text in 'The Clans of the Scottish Highlands' by James Logan begins as follows: "CLANN AONGHAIS - MAC INNES Angus is one of the oldest names in the Gaëlic language, occurring frequently in Scottish and Pictish history. The Gaëlic orthography is Aongas, but as in the genitive, the g is aspirated by the following h, the word is pronounced Aon'es, and hence Innes. There can be no doubt but many of the latter name, and hence those who are called MacInnes, are probably of the Mac Aon'ais clan; but it is probable also, that many families bear this name as a local appellation. Innes signifies a islet, and those whose residence was in such a situation, would be designated from that circumstance, as in the instances, Aird, Glen, Ballach, Blair, Ross, &c. originally designations applied as descriptive of locality. Innes of Innes, and other families of antiquity in the county of Moray, acquired their name from lands so called, but no history or tradition derives them from the Mac Aon'ais's."