It turns out that the garland text was posted some time ago, at  Song: I love my love. No proper source details were given, and the final two verses were omitted. Apart from that it's an accurate transcription of the text as quoted in the Journal, though copied from an intermediate source, Inglis Gundry's Canow Kernow, 1966, 34, where it was reproduced from the Journal. Later in the same thread is an abc of the tune from the same source, which is also accurate. You'll recognise it as the melody used by Holst.