When you complete the Fief of Winter’s Chill, you will find Stomund has gone for a walk, and left a note telling you he went to see Judge Cleric. When you enter the Abbey of the Hallowed Sisters for the first time, you can find Stomund just before the bridge entering into the area. If that is the case, you will him again in the square abbey building with the tree growing in the middle of it.

When you speak to him for the second time, he requests the following items:

• Damaged Standard: Located in the Catacomb area of the Manse of Hallowed Brothers. Follow the first path up from the first Vestige into the guarded camp area below the Manse. From there enter the stone pathway into the tunnel area. Follow the tunnel towards a flooded cell down some stairs and you can claim the standard inside it.
• Tattered Banner: Located in the Abbey of Hallowed Sisters. Go through the level as normal, and when you reach the church building beyond the square abbey area where Stomund is, you can enter the church. You’ll know you’re there when you find the weird biology hanging from the ceilings. Climbs the stairs, then head through the pathway guarded by two dogs near an opening on the far end of the upstairs church. This will take you to where an Abbess mage is located on a platform, with an umbral crossing to where a Saintly Quintessence is. Defeat the mage to gain the Tattered Banner.

Once you have both items, return to him and give him the items to forge the banner. You’ll find him again later on in the Empyrean to complete the quest. You can read more on our Stomund Quest guide here.