So Angor's grave is honestly just going to be a pile of rocks? Because trolls. So it's not really a tombstone per say and probably easy to miss, but there will be a larger rock there with some weird troll language on it and his name translated too.

As for his death he basically just gets stabbed through with a sword and turns into stone. Nothing fancy so if anyone wants to experience it go for it?!

As for him, well, I mean he's come to terms with his own death for a second time. He's oddly at peace about it too so he won't be too emotional or anything. He might wander around to other people's graves though and leave a few offerings, even with the knowledge of learning of how others died.