During his stay in Berlin in 1764, Boswell lived in the house of Karl David Kircheisen, the president of the Berlin city council.
Rudolf Ulrich van SporkenBorn 1696
Married (1721) to Susanna van Slingelandt (1700-1737). Envoy extraordinary to the Hague for Hannover.
Life with Boswell:
Boswell visited the Baron on December 28, 1763, at The Hague.
Sources: Familysearch and Boswell in Holland 1763-64, p. 107