Map of Castle Ansilla
1 - Private Gautliffe
2 - Exit
3 - Doll Asnilly
4 - Lever
5 - Ticneri
6 - Til's Collection
7 - Soulbind cure
8 - Conni
Talk to her and then find a key to her cell. You'll find it in the eastern wing of the castle.
After opening the bars, go to Byrn for further instructions.
This time you have to find Erion Odi, who stays at Odi's Camp M11(2). He will refuse to go back to the castle, if you won't find any replacement for him.
A good material for new sergeant is a man called Cornall. He awaits you in the western part of the location M11(14). Talk to the soldier and convince him to replace Erion using persuasion.
After that you can take Odi with you.
A next person you have to look for is Astor Colliane.
You'll find him in the center of Mel Senshir M7(8).
The gnome will agree to help you but first you have to get certain dagger for him. It is in possession of Fridi Edstar, who stays in the nearby inn.
In order to get the item, you can steal or buy it, or even to persuade the woman to give you the dagger.
When you bring back the artifact to the gnome, you can go with him to your manor. Talk to Byrn to end the quest.
The Lost Squad
In the central part of the southern Caeled Coast you will meet general Fynn M11(10). His squad was attacked by Tuatha. The man will ask you to find his soldiers and to help him in the fight.
So go to Castle Ansilla M11(11), passing through the nearby tunnel.