Parse this person name:

Ewald Geisel, 1234-1289, flourished 1254-1274
user
first_name: Ewald
last_name: Geisel
middle_names: []
temporal:
- start: 1234
  end: 1289
  type: life_span
- start: 1254
  end: 1274
  type: flourished
titles: []
extra_info: []
assistant