Parse this person name:

Victoire Royer (1794-1855, flourished 1817-1842)
user
first_name: Victoire
last_name: Royer
middle_names: []
temporal:
- start: 1794
  end: 1855
  type: life_span
- start: 1817
  end: 1842
  type: flourished
titles: []
extra_info: []
assistant