Arthur Wiki
"Thora's father" is not an official name.
Thora's father
Thora's Father.png
Gender Male
Animal Aardvark
Hair color Moderate orange
Complexion Pale, light grayish tangelo
Family Thora's mother (wife)
Thora Read (daughter)
Thora's brother 1 (son)
Thora's brother 2 (son)
Thora's brother 3 (son)
Theodore Read (brother)
Dora Winifred Read (sister)

David Read (grandson)
Jane Read (granddaughter-in-law)
Arthur Read (great-grandson)
D.W. Read (older great-granddaughter)
Kate Read (younger great-granddaughter)
Loretta (granddaughter or granddaughter-in-law)
Bud Read (grandson or grandson-in-law)
Monique (great-granddaughter)
Ricky (great-grandson)
Loretta's daughter (great-granddaughter)
David's brother (grandson)
Bonnie (granddaughter or granddaughter-in-law)
Sean (grandson or grandson-in-law)
George (great-grandson)
Cartoon debut "Clarissa is Cracked"

Thora's father is the deceased husband of Thora's mother and the father of Grandma Thora and her three brothers. He first appeared in a flashback in the episode "Clarissa is Cracked."