Simplify the following text for a Grade 6 native English-speaking person.
Original: The Princess Elizabeth ( 2 May 1770 â `` 10 January 1840 ) was a member of the British Royal Family , the seventh child and third daughter of King George III and Queen Charlotte .
Simplified: Princess Elizabeth ( 22 May 1770 â `` 10 January 1840 ) was the 3rd child of George III and Queen Charlotte .