1) Beneficiary 2) Heir 3) Heiress 4) Heir presumptive 5) Heritor 6) Inheritress 7) Inheritrix 8) Legatee 9) Scion 10) Son 11) Successor 1) Beneficiary in will 2) Heir 3) Heritor 4) Person of will 5) Person who has it coming 6) Receiver 7) Recipient 8) See circled squares 9) Son or daughter, usually 10) Willing recipient 
• (n.) One who inherits; an heir.
Someone who inherits property.
In·her'it·or noun One who inherits; an heir. « Born inheritors of the dignity.» Milton. 
a person who inherits; heir.