Simplify the following text for a Grade 7 native English-speaking person.
Original: Charlotte of Mecklenburg-Strelitz ( 19 May 1744 â `` 17 November 1818 ) was the Queen consort of the United Kingdom as the wife of King George III .
Simplified: Charlotte of Mecklenburg-Strelitz ( 19 May 1744 â `` 17 November 1818 ) was the Queen of the United Kingdom as wife of King George III .