Prince Charles, Prince of Wales,Duke of Cornwall,Duke of Sutherland,Earl of Carrick,Earl of Chester,Baron Renfrew,and Lord of The Isles (plus a few others,I suspect), is also the Great Steward of Scotland ; does this mean that he is obliged,even if only symbolically,to observe or watch over,swine ?? It wouldn't surprise me !!
As to the song.....try the (at least two) versions by favourites of mine,The McCalmans ; lovely !!