Parse this person name:

Sutton, John G. Anthony Gabriela., East Charles (1254-1326)
user
first_name: John
last_name: Sutton
middle_names:
- G.
- Anthony
- Gabriela
temporal:
- start: 1254
  end: 1326
  type: life_span
titles: []
extra_info:
- East Charles
assistant