Parse this person name:

Alphonse Maréchal'Gay (1321-1367, flourished 1336-1350)
user
first_name: Alphonse
last_name: Maréchal'Gay
middle_names: []
temporal:
- start: 1321
  end: 1367
  type: life_span
- start: 1336
  end: 1350
  type: flourished
titles: []
extra_info: []
assistant