Parse this person name:

Marietta Jungfer (1767-1840, flourished 1782-1811)
user
first_name: Marietta
last_name: Jungfer
middle_names: []
temporal:
- start: 1767
  end: 1840
  type: life_span
- start: 1782
  end: 1811
  type: flourished
titles: []
extra_info: []
assistant