Parse this person name:

Rik van Grinsven, 1393-1470, flourished 1413-1442
user
first_name: Rik
last_name: van Grinsven
middle_names: []
temporal:
- start: 1393
  end: 1470
  type: life_span
- start: 1413
  end: 1442
  type: flourished
titles: []
extra_info: []
assistant