Parse this person name:

Olivie Marcel O. Rocher-Langlois, Saint Rémynec, 1806-1872
user
first_name: Olivie
last_name: Rocher-Langlois
middle_names:
- Marcel
- O.
temporal:
- start: 1806
  end: 1872
  type: life_span
titles: []
extra_info:
- Saint Rémynec
assistant