This is a really tragic, old legend from St Athan in the Vale of Glamorgan. The back story of an oft reported aparation of a white lady ghost in a field near West Orchard Castle. With a lot of historical context.
We hear about the second crusades, the De Clare family, the Berkerolles family, the Umphraville family, and of course the local castles at the heart of the drama.
The general gist of the story is Jasper Berkerolles of West Orchard Castle marries very well, but always harbours doubts that he is punching above his weight. And when he has to go to war he becomes consumed with jealously that she is having infidelities with his neighbour. When he returns home he is so tormented he condemns her to a gruesome death.
I wrote about this story in my second book on local legends: More legends and folklore from Barry, Bridgend and the Vale.
Telling the story at the place where it is set adds quite an element of drama. Enjoy. And please subscribe to my channel to enjoy more in the future.