The North of Scotland version of the work is indeed credited as Having been written by one David Henderson. Grampian records were formed in 1964, and the Waters of Kylesku was their big local hit of the time. This explains the popularity of the song in 1965, and how Scots warbler Calum Kennedy and others of the ilk took the song up in subsequent years. I know not if its based on an earlier work, but the Henderson version would be a copyright work. I know a few people have addded verses to the tune to suit!

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