Duck family (Disney) strip, Della writes to Donald that the boys had placed a firecracker under their father's chair as a prank and that their father had been sent to the hospital. This was the reason why the boys first showed up at Donald's house. Thereafter the father is generally assumed to have disappeared. In "The Richest Duck in the World", when Scrooge mentions that the few family members he had had disappeared, the boys respond "We know how "that" feels!" Donald's cousin Fethry Duck was created for the Disney Studio Program by Dick Kinney and Al Hubbard and was first used in
Duck family (Disney) is the wife of Casey Coot, the mother of Cuthbert and Fanny Coot, and the maternal grandmother of Gus Goose. Fanny Coot is the mother of Donald's cousin Gus Goose and she was first mentioned in the Donald Duck comic strip of May 9, 1938 by Bob Karp & Al Taliaferro where Gus first appeared. But Gus's mother's surname wasn't revealed in this comic strip, where she identifies herself in a letter to Donald as "Aunt Fanny". So she was originally sister of one of Donald's parents. In Don Rosa's Duck Family Tree she is featured as a daughter of