Parse this person name:

Beau van Leeuwen, 1577-1619, flourished 1607-1614
user
first_name: Beau
last_name: van Leeuwen
middle_names: []
temporal:
- start: 1577
  end: 1619
  type: life_span
- start: 1607
  end: 1614
  type: flourished
titles: []
extra_info: []
assistant