On another tack:The fine old ballad "SIR PATRICK SPENCE" (Child #58) --
'Alake and alas now, good master
For I fear a deadly storm,
For I saw the new moon yesterday
With the old moon in her arms.Many is the time I have seen that very thing---the larger darker oval cradled in the the silver sliver of the brighter crescent.
Art Thieme