Parse this person name:

John Montoya, 1820-1891, flourished 1840-1865
user
first_name: John
last_name: Montoya
middle_names: []
temporal:
- start: 1820
  end: 1891
  type: life_span
- start: 1840
  end: 1865
  type: flourished
titles: []
extra_info: []
assistant