 Finally, claimant Knut Haakonson of Ribbunger, earl of Norway, is uneasy choice (though possibly easiest of these) because he was not generally called duke.He probably would be called king, or earl, or lord, or master, but not easily duke which title was adopted to Norway in Knut's and Cecilia's lifetime as higher than earl (actually, to Knut's father-in-law duke Skule).However, his recognized title jarl is translated as Dux at least in Sweden.