Astrid's Great-Grandmother is mentioned only once in the game, School of Dragons, as part of the Quest "History of Viking Contraptions". Her name is unknown. It is also unknown from which side of Astrid's family she is from, her mother's side or her father's side.
At some point in Astrid's Great-Grandmother's life, she was alive at the same time as Astrid. She bequeathed her comb made of durable Red Deer Antler to her.
|“||You need my comb for the new class? Sure! Vikings have been making combs for years, but this one is special. My great-grandma gave it to me!||”|
|— Astrid in "History of Viking Contraptions"|
|"Dragons: Rise of Berk":||Absent||"School of Dragons":||Mentioned|
|"How to Train Your Dragon":||Absent||"How to Train Your Dragon 2":||Absent|
|"DreamWorks Dragons: Wild Skies":||Absent|
|Astrid's Great-Grandmother uses Creative Commons Licensed content from the Dreamworks School of Dragons Wiki page History of Viking Contraptions. The list of authors can be found on the page revision history (view authors).|