Donald Duck’s Family Tree

This took some time, no doubt. Now we can settle the age-old questions about the Duck family, such as:
Whose uncle is Uncle Scrooge?
Turns out he’s Donald’s mother’s brother. So, uncle. Or in the case of H, D, and L, he’s their great uncle.
Who is the mother of Huebert, Dueteronomy, and Louis … and is Uncle Donald really their uncle?
Della Thelma Duck, Donald’s sister, and yes he’s really their uncle.
Gilles Maurice’s Duck Family Tree