Parse this person name:

Siegward Hellwig, 1332-1404, flourished 1354-1379
user
first_name: Siegward
last_name: Hellwig
middle_names: []
temporal:
- start: 1332
  end: 1404
  type: life_span
- start: 1354
  end: 1379
  type: flourished
titles: []
extra_info: []
assistant