User blog comment:Fimber/Things that went wrong in "The Death Song of Uther Pendragon"/@comment-4892425-20121023112345/@comment-6905051-20130404143924

When Morgana sees him in prison and condemns him, she clearly describes her situation as someone with magic, to hate who you are, to be afraid etc etc, which shows Uther knows she has Magic now, or she expressed it then