Parse this person name:

Bernard Vaillant, 1321-1386, flourished 1347-1377
user
first_name: Bernard
last_name: Vaillant
middle_names: []
temporal:
- start: 1321
  end: 1386
  type: life_span
- start: 1347
  end: 1377
  type: flourished
titles: []
extra_info: []
assistant