Parse this person name:

Léon Dupont, 1426-1480, flourished 1444-1465
user
first_name: Léon
last_name: Dupont
middle_names: []
temporal:
- start: 1426
  end: 1480
  type: life_span
- start: 1444
  end: 1465
  type: flourished
titles: []
extra_info: []
assistant