One of the “Founders” of Ulos, bones are found in the Ossuary.

Your family has always maintained that your lineage connects to the Founders, but now you can gather proof! You find a skull which may belong to Nepolitus, the progenitor of your house. - Backstory Codex (RPA-BC)

You find the possible Skull of Nepolitus. The inscriptions on the skull are not clear. You can make a rubbing of the inscriptions.

• Make changes to the inscription to make sure your family lineage is sound
• Leave the skull as is and just make the rubbing