Parse this person name:

Pleun Grondel (1377-1442, flourished 1400-1420)
user
first_name: Pleun
last_name: Grondel
middle_names: []
temporal:
- start: 1377
  end: 1442
  type: life_span
- start: 1400
  end: 1420
  type: flourished
titles: []
extra_info: []
assistant