This should become established lore on the wiki somewhere. It'd be great.
I don't know why, but when I read that and thought of how Fronen was basically every region around that lake, it made me think of the Lac des Fées. It's a local story that there used to be native people that lived around here, and there was this native princess who loved two men but could not decide. When a war broke out, the men had to go, and both of them died before she could make a choice. Too saddened by these news, she threw herself in the lake and haunts it ever since.
Would indeed seem like a good piece of lore for here, and would allow us to build something IC for what would otherwise be an unfortunate unexplained OOC event.