Parse this person name:

Richard Chevalier, 1220-1287, flourished 1238-1262
user
first_name: Richard
last_name: Chevalier
middle_names: []
temporal:
- start: 1220
  end: 1287
  type: life_span
- start: 1238
  end: 1262
  type: flourished
titles: []
extra_info: []
assistant