Before the mid-19th century, 'football' existed as a sprawling family of loosely related games played across British schools, universities, and towns, each with its own local rules — some allowed players to catch and run with the ball, others forbade any handling entirely; some permitted 'hacking' (kicking an opponent's shins to dispossess them), others banned it as unnecessarily brutal. Rugby School's version, which allowed running with the ball, and Eton's and Harrow's more kicking-focused variants represented just two poles of a much wider spectrum of incompatible local games, all called by the same name.
As former pupils of these different schools reached university and needed to organize matches against each other, the incompatibility became a practical problem. In October 1863, representatives of several London-area football clubs met at the Freemasons' Tavern to try to establish a single common set of rules. The central dispute was over handling the ball and hacking: Blackheath, a club favoring the rugby-style handling game, walked out of the meeting when the majority voted to ban both carrying the ball and hacking. The remaining clubs formed the Football Association and adopted the no-handling, no-hacking rules that became the foundation of what the rest of the world calls football or soccer, while Blackheath and like-minded clubs went on to formalize rugby football as a separate, parallel code a few years later.