Parse this person name:

Xavier Legrand (1778-1852, flourished 1800-1823)
user
first_name: Xavier
last_name: Legrand
middle_names: []
temporal:
- start: 1778
  end: 1852
  type: life_span
- start: 1800
  end: 1823
  type: flourished
titles: []
extra_info: []
assistant