1610
Jacob Kettler, 3rd duke of Courland and Semigallia (died 1682)
Jacob Kettler, 3rd duke of Courland and Semigallia (died 1682)
Jacob Kettler, 3rd duke of Courland and Semigallia (died 1682)
Duke of Courland and Semigallia from 1642 to 1682
Jacob Kettler, 3rd duke of Courland and Semigallia (died 1682)
Jacob Kettler, 3rd duke of Courland and Semigallia (died 1682)