Parse this person name:

Leonhard Kusch (1393-1441, flourished 1420-1436)
user
first_name: Leonhard
last_name: Kusch
middle_names: []
temporal:
- start: 1393
  end: 1441
  type: life_span
- start: 1420
  end: 1436
  type: flourished
titles: []
extra_info: []
assistant