I have just done the Sancre Tor quest for the first time and wondered who is buried in the illegible tombs. Since this is a burial for the Reman dynasty I would suspect two of the earlier rulers and not Juliek the heir, who was assassinated by the Morag Tong and hence not really showing as particularly valiant or valorous (to use two words with the letter V.) As a side note, the ghosts refer to "Goin back to Aetherius", isn't it supposed to be the plane of Aetherium or are they distinctly different? Shame there is no forum for lore...

There is a forum for lore. It's under Elder Scrolls, not Oblivion.