Parse this person name:

John Clayton (1239-1307, flourished 1261-1284)
user
first_name: John
last_name: Clayton
middle_names: []
temporal:
- start: 1239
  end: 1307
  type: life_span
- start: 1261
  end: 1284
  type: flourished
titles: []
extra_info: []
assistant