Parse this person name:

Kathryn Dennis, 1261-1335, flourished 1284-1300
user
first_name: Kathryn
last_name: Dennis
middle_names: []
temporal:
- start: 1261
  end: 1335
  type: life_span
- start: 1284
  end: 1300
  type: flourished
titles: []
extra_info: []
assistant