Parse this person name:

Stéphanie Sauvage, 1837-1884, flourished 1854-1879
user
first_name: Stéphanie
last_name: Sauvage
middle_names: []
temporal:
- start: 1837
  end: 1884
  type: life_span
- start: 1854
  end: 1879
  type: flourished
titles: []
extra_info: []
assistant