King William the First was a King of Kyrandia, living many centuries ago. He created the covenant with the Other Kingdom of Nature. Thus, the residents of Kyrandia and the Natural world would cooperate, care and protect each other.
Where William stood, the Kyragem emerged form the ground, given by the Land as a symbol of their alliance, which would concentrate magic more stong than in any other kingdom. It was under the protection of the royal family.