I believe that Morytania was under complete Saradominist control, due to being ruled by the Icyenes, specifically King Ascertes and Queen Efaritay, though Mort'ton may have been under control of Flamtaer, who possibly was the God of Fire (due to his name). Then, when Zamorak launched the God Wars and the Third Age, Lord Drakan was sent to Morytania and conquered it, turning it into the swampy hell it is today.
Anyone play Armies of Gielinor on FunOrb?
Ramsay Bolton is the king we deserve.