Parse this person name:

Bernfried Rouven Wilmsen, Osterburg, flourished 1422-1437
user
first_name: Bernfried
last_name: Wilmsen
middle_names:
- Rouven
temporal:
- start: 1422
  end: 1437
  type: flourished
titles: []
extra_info:
- Osterburg
assistant