Beneficiary, inheritor (7)
I believe the answer is:
legatee
I believe this is a double definition.
'beneficiary' is the first definition.
(I know that legatee is a type of beneficiary)
'inheritor' is the second definition.
(I've seen this in another clue)
(Other definitions for legatee that I've seen before include "Gifted person" , "person entitled to benefit" , "One receiving a bequest" , "One who gains benefits" , "Beneficiary of a will" .)