Parse this person name:

Stella Eigenwillig (1409-1472, flourished 1435-1459)
user
first_name: Stella
last_name: Eigenwillig
middle_names: []
temporal:
- start: 1409
  end: 1472
  type: life_span
- start: 1435
  end: 1459
  type: flourished
titles: []
extra_info: []
assistant