Parse this person name:

William Morvan, 1200-1241, flourished 1226-1236
user
first_name: William
last_name: Morvan
middle_names: []
temporal:
- start: 1200
  end: 1241
  type: life_span
- start: 1226
  end: 1236
  type: flourished
titles: []
extra_info: []
assistant