Parse this person name:

Gereon Döhn, 1792-1847, flourished 1819-1837
user
first_name: Gereon
last_name: Döhn
middle_names: []
temporal:
- start: 1792
  end: 1847
  type: life_span
- start: 1819
  end: 1837
  type: flourished
titles: []
extra_info: []
assistant