Parse this person name:

Finn van Loon (1812-1869, flourished 1838-1864)
user
first_name: Finn
last_name: van Loon
middle_names: []
temporal:
- start: 1812
  end: 1869
  type: life_span
- start: 1838
  end: 1864
  type: flourished
titles: []
extra_info: []
assistant