|Type||Competed in Olympic Games|
|Full name||Brenda Mersereau•Helser (-de Morelos)|
|Born||26 May 1924 in San Francisco, California (USA)|
|Died||26 March 2001|
|Affiliations||LAAC, Los Angeles (USA)|
|Title(s)||Countess de Morelos y Guerrero|
In addition to helping set an Olympic record in the freestyle relay at the 1948 Games, Brenda Heiser swam in both the freestyle individual events. In the 100m she was eliminated in the semi-finals and in the 400m she placed fifth in the final. Helser won four AAU titles outdoors in the 100 metre freestyle, winning in 1940-41, 1943, and 1946. She also swam on six AAU champion medley relay teams - from 1942-45 for the Multnomah Athletic Club, and in 1947-48 for the Los Angeles Athletic Club.
Brenda Heiser was one of the veterans on the women’s swim team at the London Olympics. In the early part of her career she represented the Multnomah AC in Portland, Oregon, but later swam for the Los Angeles AC. Helser attended Stanford University. She later became, by marriage, the Countess de Morelos y Guerrero, and Helser-de Morelos settled in France, where she raised their children. She is a member of the Oregon Sports Hall of Fame and the Stanford Athletic Hall of Fame.
|Games||Discipline (Sport) / Event||NOC / Team||Pos||Medal||As|
|1948 Summer Olympics||Swimming (Aquatics)||USA||Brenda Helser|
|100 metres Freestyle, Women (Olympic)||8 h2 r2/3|
|400 metres Freestyle, Women (Olympic)||5|
|4 × 100 metres Freestyle Relay, Women (Olympic)||United States||1||Gold|
Year of birth usually given as 1926, but this is not supported by California birth index and US censuses.