In September 1816, Charlotte Kestner (née Buff), whom Goethe had met in Wetzlar in 1772, and who was the inspiration for the character of Lotte in Goethe's best-selling novel Die Leiden des jungen Werthers [The Sorrows of young Werther, 1774], travelled with her daughter Clara and personal maid from Hannover to Weimar to visit her sister and her relatives, the Riedels. Whilst in Weimar, Goethe invited Lotte to lunch, but despite only a few brief innocuous entries in Goethe's diaries concerning the return of his old flame, Thomas Mann in Lotte in Weimar manages to construct a whole novel around this incident. Research has shown that Mann did not learn about the …
Gallagher, David. "Lotte in Weimar". The Literary Encyclopedia. First published 02 December 2008; last revised 30 November -1.
[http://www.litencyc.com/php/sworks.php?rec=true&UID=12339, accessed 19 April 2015.]