Parse this person name:

Gregory Saunders, 1578-1642, flourished 1605-1633
user
first_name: Gregory
last_name: Saunders
middle_names: []
temporal:
- start: 1578
  end: 1642
  type: life_span
- start: 1605
  end: 1633
  type: flourished
titles: []
extra_info: []
assistant