Parse this person name:

Gérard Legrand, Élisabeth E. Roger Valentine, 1820-1843
user
first_name: Élisabeth
last_name: Gérard Legrand
middle_names:
- E.
- Roger
- Valentine
temporal:
- start: 1820
  end: 1843
  type: life_span
titles: []
extra_info: []
assistant