Parse this person name:

Willi Margraf, 1550-1603, flourished 1572-1584
user
first_name: Willi
last_name: Margraf
middle_names: []
temporal:
- start: 1550
  end: 1603
  type: life_span
- start: 1572
  end: 1584
  type: flourished
titles: []
extra_info: []
assistant