Quelle: http://www.who2.com/stellawalsh.html

 STELLA WALSH  •  Olympic Sprinter

Born:
3 April 1911

Birthplace:
Wierchownen, Poland

Death:
4 December 1980
(shot during robbery attempt)

Best Known As:
The Olympic sprinter who was a man

Name at Birth: Stanislawa Walasiewiczowna

Stella Walsh was a dominant sprinter of the 1930s and 1940s, the winner of 41 U.S. Championships in various events. Born in Poland, she emigrated to America and became a high school star in Cleveland. Competing for Poland at the 1932 Olympics she won gold in the 100-meter dash. At the Berlin Olympics of 1936 she lost at 100 meters to her bitter rival Helen Stephens; a controversy followed when Walsh's supporters hinted that Stephens was too fast to be a woman. (German doctors examined Stephens and announced she was in fact female.) Walsh continued to compete as an amateur until 1954 and was inducted into the U.S. Track and Field Hall of Fame in 1975. Five years later she was killed by a stray bullet at a Cleveland shopping center. An autopsy surprised everyone by showing that Walsh had male genitals and both male and female chromosomes -- a condition known as mosaicism.

...

Stella the Fella
Infoplease lists her as one of the century's great sports hoaxes

Women and Sex Tests
Walsh's case is covered in this larger story on the history of sports sex testing

The Cleveland Flyer: Stella Walsh
Google's text version of an essay from San Diego State; gives the chromosomal details on Walsh's sex

Quelle: http://www.abc.net.au/olympics/s177264.htm

Jocular recounting of the tale from Australian Broadcasting

Five Ring Circus: The twisted tale of Stella Walsh

by Pat Sheil

Meet the most outrageous transvestite of all time - she won Olympic medals and set world records back in the thirties, and got away with it.
In Berlin in 1936 there were only two female sprinters. Well, two female sprinters who mattered. One was Stella Walsh, the Polish sprinter who’d won the 1932 Los Angeles 100 metres gold in world record time. The other was Helen Stephens, an astounding runner from Calloway County, Missouri, who set a world record in the 200 metres at the American Athletic Union meet in St. Louis in 1935.
Stella didn’t like Helen, and referred to her as "that greenie from the sticks". This may have had something to do with the fact that Helen Stephens was the red-hot favourite for the 1936 100 metres, a medal which Walsh believed to be hers by divine right.
The bookies were right, and Helen Stephens won the 100 metres in world record time, with Walsh second. Then things started to get decidedly nasty.
A whispering campaign, which soon degenerated into a shouting match, was waged by the Polish press, alleging that Helen would have been better named Henry. They accused her of being a bloke, on the basis that masculinity was the only way her freakish times could be explained.
(These days they’d accuse her of being on steroids, but they weren’t readily available in ’36.)
Hitler didn’t seem to have any doubts - he’d tried to monster the Missouri Missile in his private box at the Berlin stadium after the race. But the rumours persisted, and German officials were compelled to announce that Helen had passed a sex test and was, in fact, all girl (although whether Adolf took part in this grisly examination, nobody knows).
Stella remained unconvinced. For the next 44 years, she maintained that the only reason she didn’t win gold in Berlin was that she had been beaten by a man.

Then, on December 4, 1980, Stella Walsh was out shopping in Cleveland, where she had been working for the Polish Consulate for many years, buying bunting for a visiting Polish basketball team. An armed robbery attempt went horribly wrong somewhere in the shopping centre, and Stella was mowed down by the crossfire in the parking lot.
A tragic end with a bizarre twist - because she had died in such unsavoury circumstances, an autopsy was mandatory, and guess what the coroner discovered?
Yep, Stella Walsh, who had set 11 world records and won two Olympic medals, was a man. She was a man when she intercepted a bullet in 1980, she was a man when she took the 100 metre silver in 1936, and she was man the day she was born in 1911.

Helen Stephens died peacefully, and happily female, in 1994.