Parse this person name:

Lefèvre Peltier, Bertrand R. Laurence I., 1349-1403
user
first_name: Bertrand
last_name: Lefèvre Peltier
middle_names:
- R.
- Laurence
- I.
temporal:
- start: 1349
  end: 1403
  type: life_span
titles: []
extra_info: []
assistant