Was john Walton an only child to gramma and grandpa Walton show series in waltons?

In "The Waltons," John Walton Jr. is not an only child. He is the eldest of seven siblings in the Walton family, which includes his brothers and sisters, such as Mary Ellen, Jason, and Erin. The show portrays their close-knit family life during the Great Depression and World War II, with each sibling having their own distinct personality and storylines. Gramma and Grandpa Walton play significant roles in the family's dynamics and support system.