Simplify the following text for a Grade 10 native English-speaking person.
Original: Christian Johann Heinrich Heine ( born as Harry Heine December 13 , 1797 â `` died February 17 , 1856 ) was one of the most significant German poets of the 19th century .
Simplified: Christian Johann Heinrich Heine ( 13 December 1797 â `` 17 February 1856 ) was one of the most significant German poets of the 19th century .