Final answer:
The question asks about a swimmer who participated in a parade after victories of Washington teams over California, but lacks sufficient details to identify the person or event. This intersection of sports and cultural events is notable in local or national history.
Step-by-step explanation:
The question appears to involve information about a specific historical event or sports celebration related to American sports teams and a swimmer who participated in a parade. Identifying this swimmer would require additional context or more details, such as the time period or the specific teams involved. It is likely referring to an athlete who was celebrated for their accomplishments in a public event. Without the necessary details to pinpoint the exact individual and event, it is not possible to provide a definitive answer. Athletes' public recognitions, such as in victory parades, are often significant events in local or national history and provide an interesting intersection of sports and culture.