Parse this person name:

Pelayo Nazaret Alex Adela Gabaldón, Palencia, born 1823
user
first_name: Pelayo
last_name: Gabaldón
middle_names:
- Nazaret
- Alex
- Adela
temporal:
- start: 1823
  end: null
  type: life_span
titles: []
extra_info:
- Palencia
assistant