Simplify the following text for a Grade 6 native English-speaking person.
Original: Phan Thanh Giá # n or Phan Thanh Jan ( æ 1\/2 æ ç , 1796 - 1867 ) was a Vietnamese politician , diplomat and historian .
Simplified: Phan Thanh Giá # n or Phan Thanh Jan ( Hanja : æ 1\/2 æ ç , November 11 1796 -- 1867 ) was a Grand Counsellor at the Nguyá ''