Helen Johns (swimmer)
Helen Eileen Johns , later known by her married name Helen Carroll, was an American competition swimmer, Olympic champion, and former world recordholder.
Johns was born in East Boston, but grew up in nearby Medford, Massachusetts. At the 1932 Summer Olympics in Los Angeles, Johns represented the United States at the age of 17. She won a gold medal in the womens 4100meter freestyle relay with U.S. teammates Eleanor Garatti, Helene Madison and Josephine McKim. The American women set a new world record in the event with a time of 438.0, beating teams from the Netherlands and Great Britain by nine and fourteen seconds, respectively.
Source: Wikipedia