Parse this person name:

Étienne Olivie Jacques Alexandre, Sainte Margaux, flourished 1918-1949
user
first_name: Étienne
last_name: Alexandre
middle_names:
- Olivie
- Jacques
temporal:
- start: 1918
  end: 1949
  type: flourished
titles: []
extra_info:
- Sainte Margaux
assistant