Parse this person name:

David Brown (1221-1282, flourished 1236-1266)
user
first_name: David
last_name: Brown
middle_names: []
temporal:
- start: 1221
  end: 1282
  type: life_span
- start: 1236
  end: 1266
  type: flourished
titles: []
extra_info: []
assistant