Parse this person name:

Curtis Welch (1408-1459, flourished 1434-1451)
user
first_name: Curtis
last_name: Welch
middle_names: []
temporal:
- start: 1408
  end: 1459
  type: life_span
- start: 1434
  end: 1451
  type: flourished
titles: []
extra_info: []
assistant