Nirvana... way off.
Luthien... You might be thinking of the wrong great uncle... just for clarification (since this is, after all, a geography thread) I'll tell you you it's Barahir's grave site.
Edit: Shoot! On the other hand you may have been folowing my bad directions. I said west, but meant east.
Sorry for the confusion, I'll give it to you since those would be the rivers in the western direction. You're up!