Mostyn Yanto Ffrench-Williams (12 October 1914 â 11 November 1963) was an English competition freestyle and backstroke swimmer who represented Great Britain at the Olympics, and swam for England at the British Empire Games, during the 1930s.
Ffrench-Williams was born in London and swam for the Penguin Swimming Club.
In the 1932 Summer Olympics, he finished fifth with the British team in the 4ÃÂ200-metre freestyle relay event. In the 100-metre freestyle competition he was eliminated in the first round.
Four years later the 1936 Summer Olympics in Berlin, he was a member of the British team which finished sixth with the British team in the 4ÃÂ200-metre freestyle relay contest at the 1936 Games. He also swam in the 100-metre freestyle event but was eliminated in the first round again.
At the 1934 British Empire Games in London, he was a member of the English team which won the silver medal in the 4ÃÂ200-yard freestyle competition. In the 3ÃÂ110-yard medley contest he won a bronze medal with the English team. Four years later at the 1938 Empire Games in Sydney, he was part of the English team which won the gold medal in the 4ÃÂ220-yard freestyle event. In Sydney he also participated in the backstroke competition.