Parse this person name:

Léon Allard (1766-1831, flourished 1788-1811)
user
first_name: Léon
last_name: Allard
middle_names: []
temporal:
- start: 1766
  end: 1831
  type: life_span
- start: 1788
  end: 1811
  type: flourished
titles: []
extra_info: []
assistant