Parse this person name:

Kelsey Johnson'Johnson (1497-1572, flourished 1520-1547)
user
first_name: Kelsey
last_name: Johnson'Johnson
middle_names: []
temporal:
- start: 1497
  end: 1572
  type: life_span
- start: 1520
  end: 1547
  type: flourished
titles: []
extra_info: []
assistant