Daisy Duck Once Upon a Christmas", "Mickey's Twice Upon a Christmas", and "". According to the unofficial timeline of Don Rosa, Daisy was born in 1920. According to Rosa, Daisy is the sister of Donald's brother-in-law – Daisy's brother had married Donald's twin sister, Della Duck, and together, the two became the parents of Huey, Dewey, and Louie Duck. This is his explanation of why the triplets tend to call her "Aunt Daisy" while no such courtesy is given to Gladstone Gander for example. Don Rosa has said that he considers Donald and Daisy to be nonrelated and that Duck simply is
Donald Duck and Taliaferro also introduced several members of Donald's supporting cast, including his nephews, Huey, Dewey, and Louie. In 1937, an Italian publisher named Mondadori created the first Donald Duck story intended specifically for comic books. The eighteen-page story, written by Federico Pedrocchi, is the first to feature Donald as an adventurer rather than simply a comedic character. Fleetway in England also began publishing comic-book stories featuring the duck. A daily "Donald Duck" comic strip drawn by Taliaferro and written by Bob Karp began running in the United States on February 2, 1938; the Sunday strip began the following year. Taliaferro