|Age||80s-90s (deceased; alive in the movie adaption of The Long Haul, age 90)|
Meemaw (nickname, real name unknown) was Greg's great grandmother from the maternal side and was the wife of Peepaw. She was one on Susan's side according to the family tree in the extended version of Diary of a Wimpy Kid: Do-It-Yourself Book. Gramma and her sisters are her daughters. It is proclaimed that she died from a stroke in Hard Luck. It was also revealed she had a diamond wedding ring passed down from generations. She also started the annual Heffley family Easter egg hunt. In Diary of a Wimpy Kid Do-It-Yourself Book, Helen wears the same outfit she wears in Diary of a Wimpy Kid: Hard Luck.