Parse this person name:

Tristan de Keijzer (1407-1484, flourished 1425-1449)
user
first_name: Tristan
last_name: de Keijzer
middle_names: []
temporal:
- start: 1407
  end: 1484
  type: life_span
- start: 1425
  end: 1449
  type: flourished
titles: []
extra_info: []
assistant