She was born at her father 's seat of Chevening .
She was lived there until early in 1800 , when she was sent to live with her grandmother , Hester Pitt , Countess of Chatham , at Burton Pynsent .
She was born at her father 's seat of Chevening and lived there until early in 1800 , when she was sent to live with her grandmother , Hester Pitt , Countess of Chatham , at Burton Pynsent .