Parse this person name:

Ali W. van Duyvenvoorde, Swichum, flourished 1257-1275
user
first_name: Ali
last_name: van Duyvenvoorde
middle_names:
- W.
temporal:
- start: 1257
  end: 1275
  type: flourished
titles: []
extra_info:
- Swichum
assistant