Parse this person name:

Sigmund Sauer, 1207-1262, flourished 1228-1251
user
first_name: Sigmund
last_name: Sauer
middle_names: []
temporal:
- start: 1207
  end: 1262
  type: life_span
- start: 1228
  end: 1251
  type: flourished
titles: []
extra_info: []
assistant