Simplify the following text for a Grade 8 native English-speaking person.
Original: The Princess Augusta Sophia ( 8 November 1768 â `` 22 September 1840 ) was a member of the British Royal Family , second daughter of George III and Charlotte of Mecklenburg-Strelitz .
Simplified: Princess Augusta Sophia ( 8 November 1768 â `` 22 September 1840 ) was second oldest daughter of George III and Queen Charlotte .