Part of aerisian faith is maintaining a family altar to honour house gods. The house gods are those deities that family members are born under, and honouring them with the altar ensures good fortune for the family.
Dragon Age 2 had a lot of flaws (every place looking exactly the same drove me nuts!) But all in all it might be my favorite Dragon Age game solely because of the characters. I loved how they were all friends and you could tell they were a close group.