People who only know Andy M. Stewart, formerly of Silly Wizard, may never have heard (or heard of) another Scottish singer with the easily confused name of Andy Stewart. Andy No-M, as I'll call him here, was an entertainer who worked the same vein as Sir Harry Lauder before him -- a heavy bundle of tartan enthusiasm and not a little Scottoonery.

(Look for "Andy Stewart" on Wikipedia, and you'll get a page that makes the distinction between Andy M of Silly Wizard and Andy No-M, as well as several other, non-singing Stewarts.)

Andy No-M, who died at 59 in 1993, is perhaps most famous for the comic song, "Donald, Whar's Yer Troosers?" along with other "traditional favo(u)rites" like "A Scottish Soldier."

(By way of analogy, had he been Irish, Andy No-M might have been much likelier to sing "Danny Boy" than "Four Green Fields.")

Silly Wizard Andy's middle name is MacGregor; he may have adopted the "M" as a way of making clear, at least to Scottish audiences, that he was not their father's Andy Stewart.