Parse this person name:

Sven van Brunswijk, 1304-1359, flourished 1333-1343
user
first_name: Sven
last_name: van Brunswijk
middle_names: []
temporal:
- start: 1304
  end: 1359
  type: life_span
- start: 1333
  end: 1343
  type: flourished
titles: []
extra_info: []
assistant