Parse this person name:

Leon Spreeuw (1868-1946, flourished 1898-1911)
user
first_name: Leon
last_name: Spreeuw
middle_names: []
temporal:
- start: 1868
  end: 1946
  type: life_span
- start: 1898
  end: 1911
  type: flourished
titles: []
extra_info: []
assistant