In the summer of 1934, Matthews married Betty Vallance, daughter of Stoke City trainer Jimmy Vallance, whom he first met on his 15th birthday in 1930 on his first day as office boy at the Victoria Ground.[175] The couple had two children together: Jean (born 1 January 1939) and Stanley Jr. (born 20 November 1945), who went on to become a tennis player under the tutelage of John Barrett.[176] He became Wimbledon Boys' Champion in 1962, making him the last English player to do so.[177] He never translated his success into the senior game, though, and instead moved to the United States to run the Four Seasons Racquet Club in Wilton, Connecticut.[178][179] Jean married Robert Gough, whom she had met at their tennis club.