Parse this person name:

Gundel Ullmann (1218-1267, flourished 1240-1262)
user
first_name: Gundel
last_name: Ullmann
middle_names: []
temporal:
- start: 1218
  end: 1267
  type: life_span
- start: 1240
  end: 1262
  type: flourished
titles: []
extra_info: []
assistant