After Wimbledon in 1966, Court temporarily retired from tennis. She married Barry Court in 1967, whose father, Charles Court, and brother, Richard Court, served as premiers of Western Australia. She returned to tennis in 1968, and in 1970 won all four Grand Slam singles titles. The next year, she lost the Wimbledon singles final to Evonne Goolagong Cawley while pregnant with her first child, Daniel, who was born in March 1972. Court made a comeback the same year and played in the US Open and then played throughout 1973. Her second child, Marika, was born in 1974. She started playing again in November of that year. After missing most of 1976 after having her third child, she returned to the tour in early 1977 but retired permanently that year when she learned that she was expecting her fourth child. Her last Grand Slam tournament appearance in the singles was in the 1975 US Open. Her last Grand Slam tournament appearance overall was in the 1976 Australian Open in the women's doubles.