View source for The slender rapier, 'Moonlight' (lore)

This sword appears to be of Harrudim make; the hidden image within the wire of the hilt is a style that was once popular there many years ago.  Both the name of the sword and the red shimmer of the blade suggest an invocation of Rhos.  That, and simply that it is weapon lead you to suspect it consecrated to the goddess Lilune.  How such a weapon came into the hands of the Ashana family of Earendam is a mystery, though their merchant ties give them enough clout that they could easily come into such a thing.