Parse this person name:

Grein Groth, Dolores V. (Dolores Volker), 1391-1470
user
first_name: Dolores
last_name: Grein Groth
middle_names:
- Volker
temporal:
- start: 1391
  end: 1470
  type: life_span
titles: []
extra_info: []
assistant