Question: What is the earliest year that Juliane von Schwellenberg could have served Queen Charlotte of Great Britain as the queen's bedchamber maiden?
Sentence (from "Charlotte of Mecklenburg-Strelitz"): She was also the Electress of Hanover in the Holy Roman Empire until the promotion of her husband to King of Hanover on 12 October 1814, after which she was also queen consort of Hanover.
Relevant evidence: No