Brenda Mersereau Helser (May 26, 1924 – March 26, 2001), later known by her married name Brenda Helser de Morelos, was an American former competition
swimmer who won a gold medal in the women's 4×100-meter freestyle relay at the
1948 Summer Olympics in London. A graduate of
Stanford University, de Morelos grew up in
Oregon where she graduated from Lincoln High School. Her swim coach was
International Swimming Hall of Fame member
Jack Cody. Along with fellow 1948 Olympians
Suzanne Zimmerman and
Nancy Merki, Helser was part of the
Multnomah Athletic Club team dubbed "Cody's Kids" that from 1939 to 1948, won 58 individual national swimming titles and three national team swimming championships.[3]
After her retirement from competition swimming, Helser married the Comte de Morelos, a French nobleman, and became the Comtesse de Morelos y Guerrero.[3] She was a member of the
Oregon Sports Hall of Fame and the
Stanford Athletic Hall of Fame.