Parse this person name:

Piergiorgio Columbo, 1246-1291, flourished 1276-1286
user
first_name: Piergiorgio
last_name: Columbo
middle_names: []
temporal:
- start: 1246
  end: 1291
  type: life_span
- start: 1276
  end: 1286
  type: flourished
titles: []
extra_info: []
assistant