Parse this person name:

Guenther Kreusel (1805-1867, flourished 1827-1842)
user
first_name: Guenther
last_name: Kreusel
middle_names: []
temporal:
- start: 1805
  end: 1867
  type: life_span
- start: 1827
  end: 1842
  type: flourished
titles: []
extra_info: []
assistant