Johanna Triebels-Koen
In 1886 Triebels-Koen founded the Hollandsche Dames Zwemclub (HDZ), the first swimming club for women in the Netherlands. She was until a late age president of the club. She was able that the club grew out to a leading swimming club. She made it possible for women participate in the swimming disciplines that was taken seriously within the world of Dutch swimming. For instance the club already started competing internationally in 1912 at the 1912 Kleve international aquatics competitions. The first time a British water polo team played in the Netherlands was against HDZ in 1914. In this match Triebels-Koen was the referee. Several members of the club won international medals, including Jo Evelein and Loes Brandt at the 1922 Women's Olympiad.