Unwelcome Assassin's Creed Valhalla Quest
Group: Ragnarssons' Encampment
When you get to the Halfdan's settlement, you will not find there the people you expected, but only a group of unfriendly bandits.
With the sons of Ragnar gone, bandits have claimed their old settlement for themselves. Push them out.
Prior quests
To begin Unwelcome you must first complete The Swan-Road Home.
Quest stages of Unwelcome
2. Explore the area
More bandits might still be hiding in the remains of the longhouse,so check it.
Inside the building you will find two prisoners - Yanli and Rowan. You will find out from them that Sons of Ragnar left the village some time ago. Sigurd will offer them to join you and this quest will end.
After completing Unwelcome you will get or will be able to get Settling Down.