There seem to be a lot of songs with the line, "the sky cries Mary" or "the wind cries Mary."

Does anybody know the source of this? Does this come from a legend or story of some sort? Does anybody know which song or poem first used this line?

This question has been bubbling in my mind for some time. Sure would like to hear people's thoughts and/or research on this one.

Thanks,
Alex
O..O
=o=