Parse this person name:

Kenneth Norris, 1321-1399, flourished 1336-1352
user
first_name: Kenneth
last_name: Norris
middle_names: []
temporal:
- start: 1321
  end: 1399
  type: life_span
- start: 1336
  end: 1352
  type: flourished
titles: []
extra_info: []
assistant