Parse this person name:

Ernst-Dieter Eigenwillig (1423-1497, flourished 1441-1470)
user
first_name: Ernst-Dieter
last_name: Eigenwillig
middle_names: []
temporal:
- start: 1423
  end: 1497
  type: life_span
- start: 1441
  end: 1470
  type: flourished
titles: []
extra_info: []
assistant