Parse this person name:

Cas van Grondelle (1280-1344, flourished 1300-1311)
user
first_name: Cas
last_name: van Grondelle
middle_names: []
temporal:
- start: 1280
  end: 1344
  type: life_span
- start: 1300
  end: 1311
  type: flourished
titles: []
extra_info: []
assistant