Parse this person name:

Tristan van Saksen (1559-1637, flourished 1588-1614)
user
first_name: Tristan
last_name: van Saksen
middle_names: []
temporal:
- start: 1559
  end: 1637
  type: life_span
- start: 1588
  end: 1614
  type: flourished
titles: []
extra_info: []
assistant