So Saxe-Lauenburg, except for Hadeln, passed to the House of Welf and its cadet branch House of Hanover, while the legal heirs, Anna Maria Franziska of Saxe-Lauenburg and Sibylle Auguste of Saxe-Lauenburg, never waiving their claim, were dispossessed and the former exiled in Bohemian Ploskovice. Emperor Leopold I rejected Celle's succession and thus retained Hadeln, which was out of Celle's reach, in his custody. Only in 1728 his son Emperor Charles VI enfeoffed George II Augustus with Saxe-Lauenburg, finally legitimising the de facto takeover by his grandfather in 1689 and 1693. On 27 August 1729 he confirmed Saxe-Lauenburg's existing constitution, laws and the Ritter- und Landschaft. On 5 April 1757 the "Niedersächsische Landschulordnung" decreed the compulsory school attendance for all children in Saxe-Lauenburg. George III ascended in 1760 and endorsed all the laws, the constitution and the Ritter- und Landschaft of Saxe-Lauenburg by a writ issued in St. James' Palace on 21 January 1765. In 1794 George III donated annual rewards for the best teachers in Saxe-Lauenburg.