Antonia Happel-Verduijn
Happel-Verduyn was a member of the Amsterdamsche Dames Zwemclub (A.D.Z.) from Amsterdam. As a water polo player Happel-Verduyn competed with the club internationally at the 1922 Berlin international women's swimming and water polo competitions. They won the competition after beating Aphrodite, the water polo club from Berlin, with 5-3.