Parse this person name:

Gundolf Walter (1647-1703, flourished 1670-1691)
user
first_name: Gundolf
last_name: Walter
middle_names: []
temporal:
- start: 1647
  end: 1703
  type: life_span
- start: 1670
  end: 1691
  type: flourished
titles: []
extra_info: []
assistant