Parse this person name:

Keith Blake, 1249-1322, flourished 1265-1289
user
first_name: Keith
last_name: Blake
middle_names: []
temporal:
- start: 1249
  end: 1322
  type: life_span
- start: 1265
  end: 1289
  type: flourished
titles: []
extra_info: []
assistant