Parse this person name:

Ehrenfried Geisler (1206-1248, flourished 1221-1238)
user
first_name: Ehrenfried
last_name: Geisler
middle_names: []
temporal:
- start: 1206
  end: 1248
  type: life_span
- start: 1221
  end: 1238
  type: flourished
titles: []
extra_info: []
assistant