Parse this person name:

ثامر ر. (ثامر رخاء) آل خضير, died 1246
user
first_name: ثامر
last_name: آل خضير
middle_names:
- رخاء
temporal:
- start: null
  end: 1246
  type: life_span
titles: []
extra_info: []
assistant