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Quackmore Duck was a mustached duck who married Hortense McDuck and had two children, the twins Donald and Della. Little else is known about him; it is possible that he shared his Prime Universe counterpart's bad temper and that he once acted, like him, as Scrooge McDuck's accountant, but that is unknown. It is implied that he and his wife died when their children were young, given that they were living with Scrooge in their pre-teens.