Parse this person name:

Theobald Seifert (1275-1341, flourished 1303-1322)
user
first_name: Theobald
last_name: Seifert
middle_names: []
temporal:
- start: 1275
  end: 1341
  type: life_span
- start: 1303
  end: 1322
  type: flourished
titles: []
extra_info: []
assistant