According to information passed down,from my grandmother, great aunt and then my mother, Swaledale was written to the music of a hymn by Ira D Sankey. So could have be some plagiarism by uncle JOHN REYNOLDSON.As I am not musical myself and there are over 1,200 Sankey hymns, I don't think I will discover if that was the case. It is definitely not a carol. Still sang in Swaledale at events today.