Parse this person name:

Sigfried Gotthard (1239-1293, flourished 1256-1275)
user
first_name: Sigfried
last_name: Gotthard
middle_names: []
temporal:
- start: 1239
  end: 1293
  type: life_span
- start: 1256
  end: 1275
  type: flourished
titles: []
extra_info: []
assistant