To my knowledge, not one source show his COA, so what is the sensational source for this COA? His name by modern historians is (Bjälboätten) inside brackets, he was never called Folkungaätten in any source, unless anyone can provide such? from this family, I have read some over optimistic claims that one was born, and died, in a Monastery, that a group of members of the family was named Folkungaätten and Folkunga as birth-name which is completely untrue, and I think Theres a need to increase the level of serious genealogy approach.