Ill. Admin. Code tit. 95, § 121.140
a) Widow or Widower making application must prove:
b) Child or children making application must prove:
c) Mother or Father making application must prove:
d) Person Standing In Loco Parentis must prove:
That he or she stood in relation of parent toward the person rendering service and comply with subsections (c)(1) through (5) above.
e) Brother or sister must prove:
The beneficiary making application for payment of compensation shall furnish the following proof: