Parse this person name:

Sigurd Ackermann, 1509-1571, flourished 1538-1555
user
first_name: Sigurd
last_name: Ackermann
middle_names: []
temporal:
- start: 1509
  end: 1571
  type: life_span
- start: 1538
  end: 1555
  type: flourished
titles: []
extra_info: []
assistant