Parse this person name:

Jonkman de Gratie, Stella A. D. Ryan, 1339-1419
user
first_name: Stella
last_name: Jonkman de Gratie
middle_names:
- A.
- D.
- Ryan
temporal:
- start: 1339
  end: 1419
  type: life_span
titles: []
extra_info: []
assistant