Parse this person name:

Cristoforetti, Gianmarco V. M.., Roccaforte Mondovi' (1712-1746)
user
first_name: Gianmarco
last_name: Cristoforetti
middle_names:
- V.
- M.
temporal:
- start: 1712
  end: 1746
  type: life_span
titles: []
extra_info:
- Roccaforte Mondovi'
assistant