Gravity of other objects in black holes?
Gravity, according to the majority of published and non-published scientists, is able to propagate information from one point to another at the speed of light. This means that as soon as any massive body "physically" interacts with a black hole (enters the Schwartzchild radius) there is no longer a way for anything outside of the black hole to know anything else regarding the status of the body. Therefore the new addition to the black hole simply becomes part of the system and can no longer be considered a separate entity. The body's gravity becomes that of the black hole's.

So... No