Parse this person name:

William Barker (1735-1811, flourished 1754-1772)
user
first_name: William
last_name: Barker
middle_names: []
temporal:
- start: 1735
  end: 1811
  type: life_span
- start: 1754
  end: 1772
  type: flourished
titles: []
extra_info: []
assistant