Islamic Interpretation of Dreams (Ibn-i Sirin):

To become a grandfather in a dream means longevity or earning respect.

Seeing one’s grandfather in a dream also means enjoying a happy life.

A grandfather in one’s house in a dream represents one’s own father.

Therefore, any interpretation relative to one’s father should apply here.

Ifone’s grandfather dies in a dream, it means loss of one’s determination and will.

(Also see Father)