I knew immediately that I wanted to be Nonna, as an homage to my full Italian heritage. IAlthough I called the only Grandma that I knew just that - Grandma. You know, immigrants and assimilation. My parents were Ma and PopPop to our kids.
My husband went for Granddad, which is what he used growing up and what our kids called his father.
I will tell you that both of the kids currently call me Nonno, which is a mispronunciation of Nonna. Not sure if it will stay that way or eventually be corrected. Either way is fine with me.
I know that my son, the Italian citizen, and his wife are pleased with my choice, and rumor on the street is that it won't be too long before they're adding to the family! It makes sense to everyone that their American Revolution Dad went with the more traditional Granddad.
Congratulations and enjoy!