Parse this person name:

Blanka Koch II, 1219-1278, flourished 1249-1260
user
first_name: Blanka
last_name: Koch II
middle_names: []
temporal:
- start: 1219
  end: 1278
  type: life_span
- start: 1249
  end: 1260
  type: flourished
titles: []
extra_info: []
assistant