Parse this person name:

Sylvio Stumpf, 1821-1884, flourished 1848-1869
user
first_name: Sylvio
last_name: Stumpf
middle_names: []
temporal:
- start: 1821
  end: 1884
  type: life_span
- start: 1848
  end: 1869
  type: flourished
titles: []
extra_info: []
assistant