Complex sentence: The marriage was arranged by her father's German chancellor Wolfgang von Utenhof; it was conducted 12 February 1526 and Dorothea arrived with a large entourage in Königsberg in June.
Split into simpler sentences: The marriage was arranged by her father's German chancellor Wolfgang von Utenhof. The wedding was conducted 12 February 1526 and Dorothea arrived with a large entourage in Königsberg in June.