Parse this person name:

Thierry Blanchard, 1781-1831, flourished 1798-1820
user
first_name: Thierry
last_name: Blanchard
middle_names: []
temporal:
- start: 1781
  end: 1831
  type: life_span
- start: 1798
  end: 1820
  type: flourished
titles: []
extra_info: []
assistant