Parse this person name:

Pietro Roero (1809-1856, flourished 1827-1843)
user
first_name: Pietro
last_name: Roero
middle_names: []
temporal:
- start: 1809
  end: 1856
  type: life_span
- start: 1827
  end: 1843
  type: flourished
titles: []
extra_info: []
assistant