Parse this person name:

Marion Geisel (1469-1520, flourished 1484-1507)
user
first_name: Marion
last_name: Geisel
middle_names: []
temporal:
- start: 1469
  end: 1520
  type: life_span
- start: 1484
  end: 1507
  type: flourished
titles: []
extra_info: []
assistant