In Elden Ring, you’ll find a wide range of characters that will share their plight with you, most of these will have Quests that span multiple locations. This page will detail where you can find Castellan Edgar and complete his Questline.
First Meeting - Castle Morne
The start of Edgar’s Questline doesn’t start with him, but with his daughter Irina, who you will find just south of the Bridge of Sacrifice Site of Grace in the Weeping Peninsula. She’ll recount the state of affairs in Castle Morne to the south, and inform you that her father, as commander, will not leave his post. Instead, she offers you Irina’s Letter to deliver to him.
Once you reach Castle Morne to the south, take the lift up and from the the courtyard, head past the Pumpkin Head and around the corner to find a ladder leading up. Dispatch the enemies up ahead and then climb down the ladder to your left to find another set of enemies. At the end of this pathway are some stairs leading up, where you’ll find Edgar. At first he will lament about the dire situation at Castle Morne, and hand over a Sacrificial Twig.
Speak to him again though and you’ll be given the option to hand over the letter, at which point he remarks that he cannot leave until Leonine Misbegotten falls and retrieves the sword, but he’ll head for his daughter after. At this point, make a quick detour to check up on Irina and you’ll discover her cruel fate.
Second Meeting - Castle Morne
Third Meeting - Bridge of Sacrifice
As you’re well aware of Irina’s fate, return to the Bridge of Sacrifice Site of Grace and head to where Irina’s body is. You’ll find the grief-stricken Edgar there, swearing vengeance against those who harmed her.
Fourth Meeting - Revenger’s Shack
Once you reach the region of Liurnia, you’ll find an isolated shack on the western side of the region named Revenger’s Shack. As you attempt to interact with the Site of Grace here, Edgar the Revenger will attack as an Invader. Defeat him and he will drop the Banished Knight’s Halberd +8 along with a Shabiri Grape. There is no way to avoid Edgar from becoming an Invader following the death of Irina, this is the sad conclusion to the Irina and Edgar Questline.