Parse this person name:

Grégoire Roche, 1827-1880, flourished 1854-1875
user
first_name: Grégoire
last_name: Roche
middle_names: []
temporal:
- start: 1827
  end: 1880
  type: life_span
- start: 1854
  end: 1875
  type: flourished
titles: []
extra_info: []
assistant