Parse this person name:

Hélène E. Pelletier, GuillouBourg, flourished 1428-1458
user
first_name: Hélène
last_name: Pelletier
middle_names:
- E.
temporal:
- start: 1428
  end: 1458
  type: flourished
titles: []
extra_info:
- GuillouBourg
assistant