Parse this person name:

Kyan Verkade (1397-1444, flourished 1415-1436)
user
first_name: Kyan
last_name: Verkade
middle_names: []
temporal:
- start: 1397
  end: 1444
  type: life_span
- start: 1415
  end: 1436
  type: flourished
titles: []
extra_info: []
assistant