Parse this person name:

William Maillard (1207-1287, flourished 1234-1257)
user
first_name: William
last_name: Maillard
middle_names: []
temporal:
- start: 1207
  end: 1287
  type: life_span
- start: 1234
  end: 1257
  type: flourished
titles: []
extra_info: []
assistant