Cilly Aussem was a German female tennis player. She was the first German, male or female, to win the singles title at Wimbledon in 1931. She also won the women's single titles at the French Championships and German Championships in 1931. Aussem's coach and mixed doubles partner was Bill Tilden. They won the mixed doubles title at the 1930 French Championships. According to A. Wallis Myers of The Daily Telegraph and the Daily Mail, Aussem was ranked in the world top ten in 1928, 1930, 1931, and 1934, reaching a career high of World No. 2 in those rankings in 1930 and 1931 behind Helen Wills Moody.

https://en.wikipedia.org/wiki/Cilly_Aussem