Thora's mother

Thora's mother
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|name = Aunt Mary |image = |Thora's Mother]] |role = Double-Appearance Character |gender = Female |animal = Aardvark |actor = Sonja Ball (young woman) |double1 = Arthur's Cousin Catastrophe |double2 = Clarissa is Cracked (flashback) |family = Thora Read (daughter)
David Read (grandson)
Loretta (granddaughter)
Arthur Read (great-grandson)
Monique (great-granddaughter)
Ricky (great-grandson)
D.W. Read (great-granddaughter)
Tiffany (great-granddaughter)
Kate Read (great-granddaughter)
Sons |episodes = 2}}

Thora's mother as a young woman.

Thora's Mother (also known as Arthur, D.W., and Kate's Great-Grandmother) is the unnamed mother of Thora, David and Loretta's maternal grandmother, and Arthur, D.W., Kate, Monique, Ricky, and Tiffany's great-grandmother. In Clarissa is Cracked, she is shown as a young mother from Thora's childhood, and in Arthur's Cousin Catastrophe, she is shown as a present elderly woman at the family reunion, and later wins the egg race there.