Anna Helweg
On of her first achievements was at the 20th anniversary competition of the Hollandsche Dames Zwemclub (H.D.Z.) in 1906. In this main competition of that era for women she won a third prize. In 1907 she won at a competition the third prize in the 80 metre freestyle. In 1911 she won the first prize in the 40 metre backstroke event.