Parse this person name:

Sierra Millán, Eligia Gregorio Ariel Estrella, 1429-1474
user
first_name: Eligia
last_name: Sierra Millán
middle_names:
- Gregorio
- Ariel
- Estrella
temporal:
- start: 1429
  end: 1474
  type: life_span
titles: []
extra_info: []
assistant