Parse this person name:

William Leclerc (1222-1273, flourished 1251-1268)
user
first_name: William
last_name: Leclerc
middle_names: []
temporal:
- start: 1222
  end: 1273
  type: life_span
- start: 1251
  end: 1268
  type: flourished
titles: []
extra_info: []
assistant