Dreaming about the death of the father of the grandfather while he is alive
It is strong dream. The dream about the death of a relative is the realization of deep hidden expectation that the death is not avoidable and the acceptance of it before it happens is the solution to the inevitable changes of life. Generally, the creation of such experience while we are dreaming is based on amazing ability of our subconscious mind to prepare us so that we become more stronger and capable to bear anything who might seem first unbearable. In other words, the dream about the death of the father (or other relative) while he is alive is the training to live a life without him (or any beloved one). So, this dream means that after each of such dream we become stronger. Also, it announces that sooner or later we will receive the authority, power and wisdom that our father or grandfather have.
It doesn’t have such prophetic message, of which you should think about. But it sometimes becomes very common dream for those who are in constant thinking about the health of the father or other relative. It shows delicate care and strong bond between two also.