Parse this person name:

Emiliana Gustavo Barrena, Guipúzcoa, 1231-1277
user
first_name: Emiliana
last_name: Barrena
middle_names:
- Gustavo
temporal:
- start: 1231
  end: 1277
  type: life_span
titles: []
extra_info:
- Guipúzcoa
assistant