Parse this person name:

Gilles Lagarde, 1394-1447, flourished 1421-1438
user
first_name: Gilles
last_name: Lagarde
middle_names: []
temporal:
- start: 1394
  end: 1447
  type: life_span
- start: 1421
  end: 1438
  type: flourished
titles: []
extra_info: []
assistant