It was formed in 1241 from the portion of the territory of the Duchy of Silesia, and existed until 1242, when it was incorporated back into it.

Its only ruler was Duke Mieszko of Lubusz of the Silesian Piast dynasty.

[1] The Duchy of Lubusz was created in 1241, from the portion of the territory of the Duchy of Silesia, with Duke Mieszko of Lubusz becoming its ruler.

He was given its territory following the death of his father Henry II the Pious, ruler of Silesia, on 9 April 1241.

Mieszko was at the time probably about 14 years old and received those lands temporarily until he would reached adulthood to rule the rest of the Duchy of Silesia together with his older brothers.