Parse this person name:

Vajèn van Schweinfurt, 1275-1331, flourished 1290-1307
user
first_name: Vajèn
last_name: van Schweinfurt
middle_names: []
temporal:
- start: 1275
  end: 1331
  type: life_span
- start: 1290
  end: 1307
  type: flourished
titles: []
extra_info: []
assistant