Parse this person name:

Martha Brown, 1742-1803, flourished 1763-1790
user
first_name: Martha
last_name: Brown
middle_names: []
temporal:
- start: 1742
  end: 1803
  type: life_span
- start: 1763
  end: 1790
  type: flourished
titles: []
extra_info: []
assistant