Parse this person name:

William Howell, 1774-1834, flourished 1800-1829
user
first_name: William
last_name: Howell
middle_names: []
temporal:
- start: 1774
  end: 1834
  type: life_span
- start: 1800
  end: 1829
  type: flourished
titles: []
extra_info: []
assistant