The Princess Charlotte , Princess Royal ( Charlotte Augusta Matilda ; later Queen Charlotte of WÃ 1\/4 rttemberg ; 29 September 1766 â `` 5 October 1828 ) was the fourth child and oldest daughter of George III of the United Kingdom . The Princess Charlotte , Princess Royal ( Charlotte Augusta Matilda ; later Queen Charlotte of WÃ 1\/4 rttemberg ; 29 September 1766 â `` 5 October 1828 ) was a member of the British Royal Family , the eldest daughter of George III .