Parse this person name:

Grégoire Guichard (1764-1818, flourished 1791-1813)
user
first_name: Grégoire
last_name: Guichard
middle_names: []
temporal:
- start: 1764
  end: 1818
  type: life_span
- start: 1791
  end: 1813
  type: flourished
titles: []
extra_info: []
assistant