Parse this person name:

Kasimir Etzold, 1205-1281, flourished 1221-1237
user
first_name: Kasimir
last_name: Etzold
middle_names: []
temporal:
- start: 1205
  end: 1281
  type: life_span
- start: 1221
  end: 1237
  type: flourished
titles: []
extra_info: []
assistant