Parse this person name:

Sieghard Schmiedecke (1264-1319, flourished 1284-1308)
user
first_name: Sieghard
last_name: Schmiedecke
middle_names: []
temporal:
- start: 1264
  end: 1319
  type: life_span
- start: 1284
  end: 1308
  type: flourished
titles: []
extra_info: []
assistant