Ok, not really to do with Piers, but certainly Eward II. Edward fled to Neath Abbey and was pursued there by the supporters of Isabella, his estranged wife. Coins from Edward's reign have been found hidden in pillars, which Edward must have had put there. And this is not even the picture I wanted to post! There's a fantastic picture of Neath Abbey in the snow in a local paper, but it won't allow me to post it, so I came up with this one from last year, which is almost as spectacular.