Simplify the following text for a Grade 6 native English-speaking person.
Original: George Gordon Byron , 6th Baron Byron , later George Gordon Noel , 6th Baron Byron , FRS ( 22 January 1788 â `` 19 April 1824 ) , commonly known simply as Lord Byron , was a British poet and a leading figure in Romanticism .
Simplified: Lord Byron ( 22 January 1788 â `` 19 April 1824 ) was the 6th Baron Byron . He was christened George Gordon Byron , but changed his name later in life .