Parse this person name:

Felicitas Stiffel (1766-1817, flourished 1781-1806)
user
first_name: Felicitas
last_name: Stiffel
middle_names: []
temporal:
- start: 1766
  end: 1817
  type: life_span
- start: 1781
  end: 1806
  type: flourished
titles: []
extra_info: []
assistant