Duke Charles Louis Frederick of Mecklenburg was born in
Mirow on 10 October 1741, the second son of
Duke Charles Louis Frederick of Mecklenburg and
Princess Elisabeth Albertine of Saxe-Hildburghausen. On 11 December 1752, his uncle
Adolphus Frederick III died and was succeeded by Charles's older brother, who became
Adolphus Frederick IV. With his brother's accession, Charles was taken with the rest of the family from Mirow to the capital
Strelitz. From the age of 4, Charles looked set for a career in Hanoverian service after being given a Captain's commission. His sister
Charlotte married the Elector of Hanover, King
George III of the United Kingdom on 8 September 1761. Charles made frequent visits to his sister in Great Britain and he ultimately entered the service of his brother-in-law the Elector of Hanover with a chief military appointment at
Hanover following service in Spain under
Count Lippe. In the autumn of 1776, Charles was appointed
governor-general of Hanover by his brother-in-law. As Governor of Hanover, Charles effectively held all the powers of a sovereign ruler. His brother-in-law had no wish to reside in Germany, being thoroughly English. Charles then spent some time traveling before settling down in
Darmstadt, where he became President of the Imperial Credit Commission. ==Ruler of Mecklenburg-Strelitz==