Parse this person name:

Leszek Geißler (1422-1493, flourished 1440-1464)
user
first_name: Leszek
last_name: Geißler
middle_names: []
temporal:
- start: 1422
  end: 1493
  type: life_span
- start: 1440
  end: 1464
  type: flourished
titles: []
extra_info: []
assistant