Of Noble Birth

This quest only begins if The Warden is a male dwarf from the Dwarf Noble Origin and had relations with Mardy during the origin story.

Walkthrough
You encounter Mardy when you return to Orzammar. Because of your exile, the child she bore you is now considered casteless. It's up to you to restore the child's birthright.

During the Orzammar main quest talk to either Bhelen or Harrowmont and ask them to accept the child into their house. You can only do this before either one of them is made King (or very, very shortly afterwards), else the child will remain a casteless dwarf. Note: It may show up for other PCs as a completed, yet failed, quest, has shown up on magi female, dwarf commoner female and dwarf noble female as fail without even encountering Mardy, 16/09/2010.

Result
Your illegitimate son regains his status in the royal house -or- your son remains casteless. If he regains his status, you are given the chance to name him. Amongst the names you can choose are 'Endrin', 'Trian', 'Duncan', 'Gorim' or after the Dwarf Noble Warden. The name Trian will not appear if you killed him instead of just being framed for it.

Bugs

 * The quest will sometimes say you have failed to give your son the life he deserves, and Mardy will keep reappearing to repeat the same dialogue.
 * Naming your child through the Mardy dialog grants you 100 XP which can be repeated over and over.