Mrs McDuck was a anthropomorphic duck.
Description[]
At some point in his life, Scrooge McDuck's great-grandfather Silas “Potcrack” McDuck married this unknown woman. The couple had at least four children: Titus, Quagmire, Orville and Gummo. As to who she was and where she came from, it is speculated she was of Italian descent, and, more precisely, the daughter of Paperon de' Pantaloni and whoever he ended up marrying (whether that was Brigitta La Folla or someone else), as De' Pantaloni is known to have been one of Scrooge's great-great-grandfathers.
Behind the scenes[]
Mrs McDuck appears in the 1999 Stammbaum der Ducks, a German version of the Duck Family Tree.