Interpretations of other dream’s conditions about deceased father or grandfather
Smiling dead father/grandfather dream meaning: joy because of fulfillment of wishes.
Crying dead father/grandfather dream meaning: easiness after huge efforts.
Angry dead father/grandfather dream meaning: represents possible increase in the rate or speed of current ongoing progress in seeking and reaching expected goals.
Naked dead father dream meaning: can be interpreted throughout Freud and Jung “Oedipus complex” explanation and seen as psycho-reproductive development of the dreamer.
Also, other positive dream meanings, if you were dreaming about dead father/grandfather: eating, calling, asking or giving something.