Parse this person name:

Seth Luitgardis van Neustrië (1724-1776, flourished 1742-1757)
user
first_name: Seth
last_name: Luitgardis van Neustrië
middle_names: []
temporal:
- start: 1724
  end: 1776
  type: life_span
- start: 1742
  end: 1757
  type: flourished
titles: []
extra_info: []
assistant