During his stay in Berlin in 1764, Boswell lived in the house of Karl David Kircheisen, the president of the Berlin city council.
Siegmund Carl von Thüngen - Court Marshal of Saxe-Gotha
Siegmund Carl von ThüngenBorn Aug 30, 1730 in Zeitlofs
Died Feb 19, 1800 in Wetzlar
A student of four years in Göttingen, he became a chamberlain in the service of Würzburg. In the 1760s he was a Court Marshal in Saxe-Gotha before in 1767 being called to the court of the Holy Roman Emperor, Joseph II, in Vienna. In 1772 he became president of the Imperical Chamber Court in Wetzlar.1
Boswell met Thüngen, the Court Marshal at the court of Saxe-Gotha, in Gotha on October 17, 1764. Boswell found him "a sensible polite man".
Note 1: Mader, Eric-Oliver. (2005) Die Letzen "Priester der Gerechtigkeit". p. 68