Parse this person name:

Walter Ross (1767-1829, flourished 1784-1801)
user
first_name: Walter
last_name: Ross
middle_names: []
temporal:
- start: 1767
  end: 1829
  type: life_span
- start: 1784
  end: 1801
  type: flourished
titles: []
extra_info: []
assistant