Dina Willemina Jacoba Senff (April 3, 1920 in Rotterdam

Rotterdam

Rotterdam is the second-largest city in the Netherlands and one of the largest ports in the world. Starting as a dam on the Rotte river, Rotterdam has grown into a major international commercial centre...

 — June 27, 1995 in Amstelveen

Amstelveen

' is a suburban municipality in the Netherlands, in the province of North Holland. It is part of the metropolitan area of Amsterdam. The municipality of Amstelveen consists of the following villages and/or districts: Amstelveen, Bovenkerk, Westwijk, Bankras-Kostverloren, Groenelaan, Waardhuizen,...

) was a swimmer from the Netherlands

Netherlands

The Netherlands is a constituent country of the Kingdom of the Netherlands, located mainly in North-West Europe and with several islands in the Caribbean. Mainland Netherlands borders the North Sea to the north and west, Belgium to the south, and Germany to the east, and shares maritime borders...

, who won the 100 metres backstroke

Backstroke

The backstroke, also sometimes called the back crawl, is one of the four swimming styles regulated by FINA, and the only regulated style swum on the back. This has the advantage of easy breathing, but the disadvantage of swimmers not being able to see where they are going. It is also the only...

 at the 1936 Summer Olympics

1936 Summer Olympics

The 1936 Summer Olympics, officially known as the Games of the XI Olympiad, was an international multi-sport event which was held in 1936 in Berlin, Germany. Berlin won the bid to host the Games over Barcelona, Spain on April 26, 1931, at the 29th IOC Session in Barcelona...

 in Berlin

Berlin

Berlin is the capital city of Germany and is one of the 16 states of Germany. With a population of 3.45 million people, Berlin is Germany's largest city. It is the second most populous city proper and the seventh most populous urban area in the European Union...

. She did so after missing a turning point, went back to push the wall and still managed to win the race, at the expense of her teammate Rie Mastenbroek

Rie Mastenbroek

Hendrika "Rie" Wilhelmina Mastenbroek was a Dutch swimmer and a triple Olympic champion.-Biography:...

. Senff won the Dutch title twice in the 100 metres backstroke, and was named into the International Swimming Hall of Fame

International Swimming Hall of Fame

The International Swimming Hall of Fame and Museum is a history museum and hall of fame, located at One Hall of Fame Drive, Fort Lauderdale, Florida, United States, operated by private interests serving as the central point for the study of the history of swimming in the United States and around...

in 1983.