Parse this person name:

William Leroux (1210-1263, flourished 1227-1249)
user
first_name: William
last_name: Leroux
middle_names: []
temporal:
- start: 1210
  end: 1263
  type: life_span
- start: 1227
  end: 1249
  type: flourished
titles: []
extra_info: []
assistant