In 1811 Anderson's half was purchased by Frederick William, Duke of Brunswick-Wolfenbuttel. The Duke was a bitter opponent of Napoleon's domination of Germany, and escaped to England after taking part in the Battle of Wagram. He returned to Brunswick in 1813 to raise fresh troops, but two years later was killed at the Battle of Quatre Bras. His part of Belmont House was also purchased by the Gas Company and sold to the Railway Company in 1855.