This is precisely why I'm wondering, as the Welsh annals do indeed record the raids, and they are fewer than average for this period. But I do need two (not in the same place -- one is in Cornwall, in fact). There were certainly years when several of the coastal monasteries were all hit and I am hoping to get away with echoing that.
I love Ann. Xan. I always wanted to do a new modern ed. and trans. and none of my jobs would let me -- not Welsh enough. Bah, she said. That's a fascinating text.