Parse this person name:

William Leroy, 1747-1817, flourished 1762-1773
user
first_name: William
last_name: Leroy
middle_names: []
temporal:
- start: 1747
  end: 1817
  type: life_span
- start: 1762
  end: 1773
  type: flourished
titles: []
extra_info: []
assistant