Parse this person name:

Gerolf Eimer (1380-1456, flourished 1398-1421)
user
first_name: Gerolf
last_name: Eimer
middle_names: []
temporal:
- start: 1380
  end: 1456
  type: life_span
- start: 1398
  end: 1421
  type: flourished
titles: []
extra_info: []
assistant