Parse this person name:

Colin de Beer, 1400-1448, flourished 1420-1434
user
first_name: Colin
last_name: de Beer
middle_names: []
temporal:
- start: 1400
  end: 1448
  type: life_span
- start: 1420
  end: 1434
  type: flourished
titles: []
extra_info: []
assistant