Parse this person name:

Alphons Silvestri, 1212-1287, flourished 1239-1249
user
first_name: Alphons
last_name: Silvestri
middle_names: []
temporal:
- start: 1212
  end: 1287
  type: life_span
- start: 1239
  end: 1249
  type: flourished
titles: []
extra_info: []
assistant