Y Ladi Wen

Y Ladi Wen ("the White Lady") is a Celtic mythology apparition, dressed in white, and is most commonly seen at Hollantide. Known in Welsh oral tradition, she is evoked to warn children about bad behaviour. Y Ladi Wen is characterized in various ways including being a terrifying ghost who may ask for help if you speak to her, or she may offer treasure or gold.

She is said to haunt the grounds of Ogmore Castle, protecting its buried treasure. Y Ladi Wen is also connected with the village of St Athan, in South Wales.