Parse this person name:

Grégoire Martinez (1814-1866, flourished 1829-1851)
user
first_name: Grégoire
last_name: Martinez
middle_names: []
temporal:
- start: 1814
  end: 1866
  type: life_span
- start: 1829
  end: 1851
  type: flourished
titles: []
extra_info: []
assistant