Parse this person name:

Margaret David (1425-1496, flourished 1450-1469)
user
first_name: Margaret
last_name: David
middle_names: []
temporal:
- start: 1425
  end: 1496
  type: life_span
- start: 1450
  end: 1469
  type: flourished
titles: []
extra_info: []
assistant