Simplify the following text for a Grade 8 native English-speaking person.
Original: Sir Christian John Storey Bonington , CBE was born on the 6th August 1934 in Hampstead , London is a British mountaineer , someone who climbs mountains .
Simplified: Sir Christian John Storey Bonington , CVO , CBE , DL ( born 6 August 1934 in Hampstead , London ) is a British mountaineer .