Parse this person name:

Mary Ziegert, 1236-1276, flourished 1256-1271
user
first_name: Mary
last_name: Ziegert
middle_names: []
temporal:
- start: 1236
  end: 1276
  type: life_span
- start: 1256
  end: 1271
  type: flourished
titles: []
extra_info: []
assistant