Parse this person name:

Leon Lether (1365-1419, flourished 1382-1401)
user
first_name: Leon
last_name: Lether
middle_names: []
temporal:
- start: 1365
  end: 1419
  type: life_span
- start: 1382
  end: 1401
  type: flourished
titles: []
extra_info: []
assistant