Eilika Billung, Wulfhild's younger sister) and were divided in 1260 into the two small states of Saxe-Lauenburg and Saxe-Wittenberg. The former state was also named Lower Saxony, the latter Upper Saxony, thence the later names of the two Imperial Circles Saxe-Lauenburg and Saxe-Wittenberg. Both claimed the Saxon electoral privilege for themselves, but the Golden Bull of 1356 accepted only Wittenberg's claim, with Lauenburg nevertheless continuing to maintain its claim. In 1422, when the Saxon electoral line of the Ascanians became extinct, the Ascanian Eric V of Saxe-Lauenburg tried to reunite the Saxon duchies. However, Sigismund, King of the Romans, had already granted Margrave Frederick IV the Warlike of Meissen (House of Wettin) an expectancy of the Saxon electorate in order to remunerate his military support. On 1 August 1425 Sigismund enfeoffed the Wettinian Frederick as Prince-Elector of Saxony, despite the protests of Eric V. Thus the Saxon territories remained permanently separated. The Electorate of Saxony was then merged with the much larger Wettinian Margraviate of Meissen; however, it used the higher-ranking title Electorate of Saxony and even the Ascanian coat-of-arms for the entire monarchy. Thus Saxony came to include Dresden and Meissen. Hence, the territory of the modern Free State of Saxony shares the name with the old Saxon stem duchy for historical and dynastic reasons rather than any significant ethnic, linguistic or cultural connection. In the 18th and 19th centuries Saxe-Lauenburg was colloquially called the Duchy of Lauenburg, which was held in a personal union by the Electorate of Hanover from the 18th century to the Napoleonic wars, and in a personal union with Denmark (along with neighbouring Holstein and Schleswig) for much the 19th century. In 1876 it was absorbed into Prussia as the Duchy of Lauenburg district of the Province of Schleswig-Holstein). Foundation of the second Saxon state Saxe-Wittenberg, mostly in modern Saxony-Anhalt, became subject to the margravate of Meissen, ruled by the Wettin dynasty in 1423. This established a new and powerful state, occupying large portions of the present Free State of Saxony, Thuringia, Saxony-Anhalt and Bavaria (Coburg and its environs). Although the centre of this state was far to the southeast of the former Saxony, it came to be referred to as Upper Saxony and then simply Saxony, while the former Saxon territories in the north were now known as Lower Saxony (the modern term Niedersachsen deriving from this). In 1485, Saxony was split in