Parse this person name:

Jonathan Ross-Henderson, 1246-1294, flourished 1264-1274
user
first_name: Jonathan
last_name: Ross-Henderson
middle_names: []
temporal:
- start: 1246
  end: 1294
  type: life_span
- start: 1264
  end: 1274
  type: flourished
titles: []
extra_info: []
assistant