Joybell - Lady Mary is named in the 2nd verse:
    There in her garden she stands
    All dressed in fine satin and lace
    Lady Mary so cold and so strange
    Who finds in her heart no place

Top 10 old ballads, hmm, a few:
   Incest: Sheath and Knife, and King's Daughter Lady Jean
   Supernatural: Grey Silkie, King Henry, Holland Hankerchief (Suffolk Miracle), etc.
   Drama: Mary Hamilton, Famous Flower of Servingmen, Mill o Tifty's Annie, Cruel Brother, etc.

all in the DT