1046: A Siemomysł, called to Merseburg by king Henry III to conclude a peace settlement, is the first documented duke of Pomerania, though the extent and location of his realm is unknown. 1056/57: The Lutici alliance breaks apart in a civil war, subsequent Obodrite eastward expansion.
For two years, he lived a contemplative life until his uncle Duke George demanded his return to Saxony. George began the training of the future Duke and educated him as a Catholic.  But in 1536 Maurice's father became a Protestant, and when he succeeded George as Duke in 1539, he made the Duchy Protestant.