Parse this person name:

Brittney Brown, 1818-1878, flourished 1837-1855
user
first_name: Brittney
last_name: Brown
middle_names: []
temporal:
- start: 1818
  end: 1878
  type: life_span
- start: 1837
  end: 1855
  type: flourished
titles: []
extra_info: []
assistant