Parse this person name:

Kirstin Barkholz, 1207-1257, flourished 1228-1248
user
first_name: Kirstin
last_name: Barkholz
middle_names: []
temporal:
- start: 1207
  end: 1257
  type: life_span
- start: 1228
  end: 1248
  type: flourished
titles: []
extra_info: []
assistant