|August "Auggie" Matthews
August "Auggie" Matthews is the younger child of Cory and Topanga Matthews and is the younger brother of Riley.
Mother: Topanga Lawrence-Matthews
Father: Cory Matthews
Siblings: Riley Matthews (sister)
Grandmothers: Amy Matthews (paternal) and Rhiannon Lawrence (maternal)
Grandfathers: Alan Matthews (paternal) and Jedediah Lawrence (maternal)
Uncles: Eric Matthews (paternal) and Joshua Matthews (paternal)
Aunts: Morgan Matthews (paternal)
Other: Prudence Curtis (maternal great aunt), Bernice Matthews (paternal great grandmother), and an unnamed paternal great aunt who was Alan's sister.
- Auggie's name was originally Louis, but was changed to Auggie after August Maturo, the actor who plays him.