Parse this person name:

Brunilda Isern (1821-1894, flourished 1841-1868)
user
first_name: Brunilda
last_name: Isern
middle_names: []
temporal:
- start: 1821
  end: 1894
  type: life_span
- start: 1841
  end: 1868
  type: flourished
titles: []
extra_info: []
assistant