Parse this person name:

Mechtild Geisel (1620-1688, flourished 1636-1659)
user
first_name: Mechtild
last_name: Geisel
middle_names: []
temporal:
- start: 1620
  end: 1688
  type: life_span
- start: 1636
  end: 1659
  type: flourished
titles: []
extra_info: []
assistant