Parse this person name:

Gregorio Vallés, 1411-1474, flourished 1435-1461
user
first_name: Gregorio
last_name: Vallés
middle_names: []
temporal:
- start: 1411
  end: 1474
  type: life_span
- start: 1435
  end: 1461
  type: flourished
titles: []
extra_info: []
assistant