Parse this person name:

Alix Morvan (1820-1881, flourished 1842-1854)
user
first_name: Alix
last_name: Morvan
middle_names: []
temporal:
- start: 1820
  end: 1881
  type: life_span
- start: 1842
  end: 1854
  type: flourished
titles: []
extra_info: []
assistant