Parse this person name:

Laurence Legrand (1796-1870, flourished 1814-1841)
user
first_name: Laurence
last_name: Legrand
middle_names: []
temporal:
- start: 1796
  end: 1870
  type: life_span
- start: 1814
  end: 1841
  type: flourished
titles: []
extra_info: []
assistant