Clan McDuck

The Clan McDuck is a family of ducks in the Disney fictional universe, based on the style of Scottish families. The most famous member is Scrooge McDuck.
According to the timeline of Don Rosa, the clan has been known since 122 AD when a member yet unnamed clan sold the stone for the construction crew of Hadrian's Wall. The Clan 'Scrooge was originally called Clan MacDuich, but left the Gaelic spelling of the name in 1071 and became the Clan McDuck.
Donald, his sister Della Duck and his sons Huey, Dewey, and Louie are the descendants of the clan through their maternal lineage.