Board Thread:General Discussion/@comment-25548156-20130814194325/@comment-25358245-20140831083718

Just want to say that its you can basicaly prove that stanford has AT LEAST a brother by two things.

1. That for Grunkle Stan to be thir Grunkle he needs to have a sibling that is the twins grandparent.

2. And more importantly, in American society at least, the convention of last names is that it is passed down by the men. Therefore this means that for Stan and Dipper and Mabel to have the same last name, Stan would need to have a brother, who would be the father of Dipper and Mabels father.

From there its quite easy to jump to the idea of the two brothers being twins, since theres already one group of twins and it would be awesome for Stan to also be a twin