Żagań
It is now part of the in the Lubusz Voivodship (a Voivoidship is part of the way Poland is organised into areas), before it was in Zielona Gora Voivodship (1975-1998). There is a castle called Sagan in the middle of an area that is  also called Sagan. The castle belonged to Wallenstein, a soldier and politician of the Thirty Years' War. Later, the castle belonged to the Bohemian family of Lobkowitz.  In 1786, the Sagan area was bought by Peter Biron, duke of Courland. In 1843, it went to his daughter Dorothea, the wife of Edmond de Talleyrand.