Parse this person name:

Natanael Blanch (1231-1272, flourished 1248-1267)
user
first_name: Natanael
last_name: Blanch
middle_names: []
temporal:
- start: 1231
  end: 1272
  type: life_span
- start: 1248
  end: 1267
  type: flourished
titles: []
extra_info: []
assistant