While walking down the street after finishing a revision of my novel What’s Left, I noticed a vanity license plate with five letters, PAPOU. I smiled, recognizing the Greek for “grandpa.” The car was parked in front of the Orthodox church. Wonder if I know him.
Do you have a similar affectionate term for your grandparents?
Jnana's Red Barn 
unfortunately, only one grandparent was alive when i was born and she passed away within that first year. my loss.