Parse this person name:

Cagnotto Valguarnera, Atenulf Romeo C. Rosario P., 1407-1464
user
first_name: Atenulf
last_name: Cagnotto Valguarnera
middle_names:
- Romeo
- C.
- Rosario
- P.
temporal:
- start: 1407
  end: 1464
  type: life_span
titles: []
extra_info: []
assistant