Parse this person name:

Ludger Bien-Walter, 1581-1642, flourished 1596-1621
user
first_name: Ludger
last_name: Bien-Walter
middle_names: []
temporal:
- start: 1581
  end: 1642
  type: life_span
- start: 1596
  end: 1621
  type: flourished
titles: []
extra_info: []
assistant