Parse this person name:

Sheppard Wyatt, Todd Dawn Katherine Mark Jennifer John, 1896-1947
user
first_name: Todd
last_name: Sheppard Wyatt
middle_names:
- Dawn
- Katherine
- Mark
- Jennifer
- John
temporal:
- start: 1896
  end: 1947
  type: life_span
titles: []
extra_info: []
assistant