Parse this person name:

Kevin Willis, 1273-1335, flourished 1299-1309
user
first_name: Kevin
last_name: Willis
middle_names: []
temporal:
- start: 1273
  end: 1335
  type: life_span
- start: 1299
  end: 1309
  type: flourished
titles: []
extra_info: []
assistant