Parse this person name:

Shawn Crawford, 1407-1476, flourished 1437-1455
user
first_name: Shawn
last_name: Crawford
middle_names: []
temporal:
- start: 1407
  end: 1476
  type: life_span
- start: 1437
  end: 1455
  type: flourished
titles: []
extra_info: []
assistant