The modern game of tennis (lawn tennis) was started as a game for British aristocrats.
However, the old medieval form of tennis (the kind King Henry VIII played) was actually started by monks in French montasteries. It was then spread by students who studied with the monks and learned to play the game. For a while it actually was a street game played by the common people, who would gamble on the results. Some people think that the reason for the bizarre scoring system - 15, 30, 40 instead of 1,2,3 is that those were units of currency. In any event, because tennis was associated with gambling many countries passed laws forbidding the common people from playing it, so it became an aristocratic sport only.