Parse this person name:

Kenneth Betty Frederic Helge Hettner, Pegnitz, 1515-1581
user
first_name: Kenneth
last_name: Hettner
middle_names:
- Betty
- Frederic
- Helge
temporal:
- start: 1515
  end: 1581
  type: life_span
titles: []
extra_info:
- Pegnitz
assistant