Jannie de Groot
Adriana Elisabeth "Jannie/Janny" de Groot was a Dutch swimmer. In 1947 and 1950 she won the national titles and became third in the 200 m breaststroke at the European [Aquatics Championships]. She competed in the same event at the 1948 Summer Olympics and finished fifth in the final won by Dutch teammate Nel van Vliet. Jannie's brother, Daan [de Groot], was an Olympic cyclist.