Parse this person name:

Clifford Williams, 1317-1364, flourished 1341-1359
user
first_name: Clifford
last_name: Williams
middle_names: []
temporal:
- start: 1317
  end: 1364
  type: life_span
- start: 1341
  end: 1359
  type: flourished
titles: []
extra_info: []
assistant