Yes, Splott Man's quite correct. There's an old ruined cottage in Llyn, North Wales, where Menir and her true love were wed. It was part of the curse on the place that if sweethearts married, their marriage would end in sorrow. I can't remember the exact details, but Menir disapeared - and a bolt of lightning split the oak tree, leaving her awful trapped remains to be discovered. Sad, really.

About The Mistletoe Bough which Sussex Carole so kindly suggested: Calennig recorded A Gower Garland (Wild Goose Records) as a Phil Tanner 50th anniversary tribute. I learnt this song from William Gammon of Mumbles, Gower, who believed that the tragedy occured in Oystermouth Castle - one of a number of likely places where the bride hid in the old oak chest.