Parse this person name:

Curtis Williams (1220-1274, flourished 1238-1250)
user
first_name: Curtis
last_name: Williams
middle_names: []
temporal:
- start: 1220
  end: 1274
  type: life_span
- start: 1238
  end: 1250
  type: flourished
titles: []
extra_info: []
assistant