Backing away from © nonsense, another possible relationship is pointed to by a song called "The Lover's Ghost," set by Ralph Vaughan Williams, "also known as "The Suffolk Miracle," "The Grey Cock," and "The Drowsy Sleeper."" Seems to be stretching it too far from my (faint) memory of these songs but I haven't re-checked the texts. Lover's Ghost
Apparently a German site.