Maternal Grandmother (RIP) Frank - Short for Frances. Everyone called her Frank so I did the same thing.
Maternal Grandfather - (RIP) He died when I was 6 months old. My mom (RIP) called him James so I probably would've done the same thing.
Maternal Great-Grandmother (RIP) Ma Mary
Paternal Grandmother (RIP) Died before I was born
Paternal Grandfather (RIP) Died before I was born