Parse this person name:

Osvaldo Costalonga, 1254-1315, flourished 1274-1303
user
first_name: Osvaldo
last_name: Costalonga
middle_names: []
temporal:
- start: 1254
  end: 1315
  type: life_span
- start: 1274
  end: 1303
  type: flourished
titles: []
extra_info: []
assistant