Parse this person name:

ثامر حجار'مهنا (1251-1330, flourished 1280-1306)
user
first_name: ثامر
last_name: حجار'مهنا
middle_names: []
temporal:
- start: 1251
  end: 1330
  type: life_span
- start: 1280
  end: 1306
  type: flourished
titles: []
extra_info: []
assistant