Parse this person name:

Isaías Cuevas, 1251-1291, flourished 1268-1286
user
first_name: Isaías
last_name: Cuevas
middle_names: []
temporal:
- start: 1251
  end: 1291
  type: life_span
- start: 1268
  end: 1286
  type: flourished
titles: []
extra_info: []
assistant