Parse this person name:

Jonathan Blair (1803-1881, flourished 1828-1850)
user
first_name: Jonathan
last_name: Blair
middle_names: []
temporal:
- start: 1803
  end: 1881
  type: life_span
- start: 1828
  end: 1850
  type: flourished
titles: []
extra_info: []
assistant