I've kill a final boss in Averguard keep (the lord of averguard), then came back to Guill, he said that it's ok, lord is now pacified and other undeads will be soon.

as i understand, I have done everything for Guill, so I went to starting location to take some other quest, but Martigan Overseer tells the same: "A member of Order passed..." meaning that I didn't finish his previous quest.

What is wrong?

Why after all I've done in Averguard Martigan speeks like i even didn't find Guill?

Should i forget about Martigan ang go somwhere else to find other quests, or there are not any other quests, or, maybe, it is my mistake and i still didn't finish Averguard quest chain and it need any additional actions to do?