Main Page | See live article | Alphabetical index Della Thelma Duck (nicknamed Dumbella) is one of Walt Disney's comicbook characters. She was the daughter of Hortense McDuck and Quackmore Duck born on 1920. Her twin brother is Donald Duck. She is the mother of Huey, Dewey, and Louie Duck.\n This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.