Great Aunt Marcie
Unseen Person
Name Marcie (Unknown Surname)
Age 68
Gender Female
Actor None
Film Appearance? No
Online Appearance? No
Book Appearance? Yes (Mentioned only)

Great Aunt Marcie is the great-aunt of Greg and the sister of Grampa and from Susan's side, she adopted a 3 or 4 year old toddler named Cecil and is Greg's adoptive's uncle and is considered an adult in the family.


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