Christoph Dietrich von Keller

Personal data
Born 1699
Died 1766

Originally an envoy from W├╝rtemberg, he eventually joined the service of Gotha where he held various positions including that of Privy Counsellor (1751-), Director of Excise (1757-), Head of the Geheimen Ratskollegiums (1757-1760) and First Minister of Saxe-Gotha (until November 28, 1763).1

Life with Boswell

Boswell had a recommendation for the Baron, which he sent to him in Gotha on October 17, 1764. Keller, however, was not in the city at the time, and the two does not seem to ever actually meet.