Parse this person name:

Gary James Keith Cynthia Ryan, East Dawnfort, flourished 1258-1291
user
first_name: Gary
last_name: Ryan
middle_names:
- James
- Keith
- Cynthia
temporal:
- start: 1258
  end: 1291
  type: flourished
titles: []
extra_info:
- East Dawnfort
assistant