NEW YORK (AP) _ Helena Mroczkowska Dow, a four-time national fencing champion and a former U.S. Olympic member, has died. She was 80.

Dow, part of a famous Olympic family, died Wednesday of cancer.

Dow was part of what is believed to be the only mother-father-son trio in U.S. Olympic history.

She was an Olympian in 1948 and her late husband, Warren Dow, was an Olympic fencer in 1936. Her son, Robert Dow, was a member of the 1972 Olympic fencing team.

Dow began fencing at Hofstra University and was Intercollegiate Women's Fencing Association foil champion in 1939.

Dow won the first of her four Amateur Fencers League of America national foil championships in 1940. She also won the title in 1943, 1947 and 1948.

She coached the women's varsity at Fairleigh Dickinson University from 1967-69. Survivors include her son and a granddaughter, Lindsay.