The Margravate of Ostmark (Göthan: Markgrevschaft auf Ostmark) is a direct vassal of the Kingdom of Renatus-Marna and thusly directly sworn under the king, formed by the lands of County of Götha and the former lands of the Principality of Curon in 1663 by King Aurelius Horen enoffed to Eimar var Burgundar after the successful seizure of the Principality by Eimar in 1662. Ordered with the protection of the southern borders of the realm and claiming more land for the Kingdom.