Parse this person name:

Oswin Römer, 1411-1480, flourished 1441-1459
user
first_name: Oswin
last_name: Römer
middle_names: []
temporal:
- start: 1411
  end: 1480
  type: life_span
- start: 1441
  end: 1459
  type: flourished
titles: []
extra_info: []
assistant