Board Thread:General Discussion/@comment-4115284-20150428133857/@comment-26266927-20150615003805

By the way, I can debunk this theory.

In that leaked clip Dipper called brother of the Author "Grunkle Stan". And, there is leaked image in Internet, showing a picture, drawn, maybe, by Mabel. That picture saying: "We have 2 Grunkles for the price of one!" So, that means, Dipper and Mabel have two Grunkles, and they both named Stan. In conclusion, we have two great uncle's, but no grandfather. So, that may lead us to third brother, maybe younger, that Stanford and Stanley.

IMHO, there is no third brother. Dipper and Mabel spend half of their summer, calling Stanley "Grunkle Stan". They just got used to call him like that, while the Author is his actual great uncle.

"Grunkle Stan" - nothing, but a nickname, while "Great Uncle Ford" - real thing.