Arthur's father was never and Since it was unnamed, in the Relatives (or family) section, it also should be Unnamed Father. Just by adding in Uther Pendragon as the father is just a asumption. You need to change it as it gives false information. Yeah, the father of King Arthur is Uther Pendragon, however, since He was never ever mentioned within the Shrek universe, we shouldn't assume it WAS Uther Pendragon. So, we should change it to Unnamed Father until we get clear confirmation it IS Uther Pendragon. Unless someone proves Uther Pendragon has in fact been mentioned in the movie.