Parse this person name:

Thijs Willemsen (1805-1859, flourished 1820-1850)
user
first_name: Thijs
last_name: Willemsen
middle_names: []
temporal:
- start: 1805
  end: 1859
  type: life_span
- start: 1820
  end: 1850
  type: flourished
titles: []
extra_info: []
assistant