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In page Curt Swan:

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Curt Swan was born in Minneapolis[1] on February 17, 1920,[2] the youngest of five children. Swan's Swedish grandmother had shortened and Americanized the original family name of Svensson.[citation needed] Father John Swan worked for the railroads; mother Leontine Jessie Hanson[3] had worked in a local hospital.[4] As a boy, Swan's given name – Douglas – was shortened to "Doug," and, disliking the phonetic similarity to "Dog," Swan thereafter reversed the order of his given names and went by "Curtis Douglas," rather than "Douglas Curtis."[5]