Simplify the following text for a Grade 9 native English-speaking person.
Original: Sir Walter Scott , 1st Baronet ( 15 August 1771 â `` 21 September 1832 ) was a Scottish historical novelist , playwright , and poet , popular throughout much of the world during his time .
Simplified: Sir Walter Scott , 1st Baronet ( 15 August 1771 â `` 21 September 1832 ) was a Scottish novelist and poet .