Parse this person name:

Roberto Williams, 1247-1295, flourished 1267-1279
user
first_name: Roberto
last_name: Williams
middle_names: []
temporal:
- start: 1247
  end: 1295
  type: life_span
- start: 1267
  end: 1279
  type: flourished
titles: []
extra_info: []
assistant