The question is about when it's possible to use the double possessive "X of Y's" if "X" is an abstract noun.
As far as I know:
(1a) an idea of the boss — correct
(1b) an idea of the boss's — correct
(1c) a boss idea — incorrect
(1d) the boss's idea — correct
(2a) the nationality of the boss — correct
(2b) nationality of the boss's — Is this correct?
(2c) the boss nationality — incorrect
(2d) the boss's nationality — correct
(3a) the death of the boss — correct
(3b) a death of the boss's — Is this correct?
(3c) the boss death — incorrect
(3d) the boss's death — correct
The phrases "an idea of the boss's", "nationality of the boss's" and "a death of the boss's" have the same construction.
So if "an idea of the boss's" is correct, then "nationality of the boss's" and "a death of the boss's" must be correct too, right?
If not, then why not?