Parse this person name:

Cas van der Spaendonc, 1292-1354, flourished 1312-1341
user
first_name: Cas
last_name: van der Spaendonc
middle_names: []
temporal:
- start: 1292
  end: 1354
  type: life_span
- start: 1312
  end: 1341
  type: flourished
titles: []
extra_info: []
assistant