Parse this person name:

Diesbergen-van den Nieuwenhuijsen, Gerrit (flourished 1220-1256), flourished 1220-1256
user
first_name: Gerrit
last_name: Diesbergen-van den Nieuwenhuijsen
middle_names: []
temporal:
- start: 1220
  end: 1256
  type: flourished
titles: []
extra_info: []
assistant