<Tr> <Th> Known for </Th> <Td> Happy Days (1974--1978) & Wonder Woman, (1976--1977) </Td> </Tr> <Tr> <Th> Spouse (s) </Th> <Td> Patrick Cronin, 1977--1999 (her death); two children </Td> </Tr> <P> Beatrice Colen (January 10, 1948 - November 18, 1999) was an American actress . Her most famous roles were Marsha Simms on Happy Days and Etta Candy on Wonder Woman . </P> <P> Colen was born to Anne and Irving Schneider in New York City, New York . Both of her parents were of German Jewish descent . She was the granddaughter of playwright George S. Kaufman . </P>

Who played wendy the waitress on happy days