Parse this person name:

Mathijs Koeman, 1416-1462, flourished 1442-1457
user
first_name: Mathijs
last_name: Koeman
middle_names: []
temporal:
- start: 1416
  end: 1462
  type: life_span
- start: 1442
  end: 1457
  type: flourished
titles: []
extra_info: []
assistant