Charlotte died giving birth to a stillborn son about a year later (had she lived, Leopold would have been Prince Consort of the United Kingdom), and Stockmar stayed in Leopold's service as his private secretary,
comptroller of the household, and political advisor. It is said that one of the services he provided was procuring a mistress for Leopold. He was not at all pleased when in 1828 one of his cousins,
Caroline Bauer, an actress who bore a striking resemblance to Princess Charlotte, became the mistress of his master. She was brought over to England, together with her mother, but the affair did not last long and she returned to Germany and to the theater. After her death (and that of both King Leopold and Baron von Stockmar), her memoirs were published in which she claimed that she had contracted a
morganatic marriage with Leopold and that she had received the title
Countess of Montgomery. There has never been any evidence of such marriage, which furthermore was strongly denied by the son of the late Dr. von Stockmar. After Leopold had briefly come under scrutiny for the position of
King of the Greeks, he was made
King of the Belgians in 1831. From then on, Stockmar took up residence in
Coburg, continuing to advise Leopold. In 1837, he was sent by Leopold to serve as advisor to
Queen Victoria: one of his first tasks was to brief her on whether Leopold's nephew,
Prince Albert (later Prince Consort), was a suitable mate. After the marriage of Victoria and Albert, Stockmar became their unofficial counsellor, including in the education of Victoria's son and heir, the future
King Edward VII, and intervened in several crises. Stockmar's memoirs were published as
Memoirs of Baron Stockmar. ==Ambassador to the German parliament==