Parse this person name:

David Williamson, 1429-1484, flourished 1458-1473
user
first_name: David
last_name: Williamson
middle_names: []
temporal:
- start: 1429
  end: 1484
  type: life_span
- start: 1458
  end: 1473
  type: flourished
titles: []
extra_info: []
assistant