Parse this person name:

Clayton Dennis (1431-1493, flourished 1448-1474)
user
first_name: Clayton
last_name: Dennis
middle_names: []
temporal:
- start: 1431
  end: 1493
  type: life_span
- start: 1448
  end: 1474
  type: flourished
titles: []
extra_info: []
assistant