What did William Webb Ellis invent?

The Rev. William Webb Ellis (1806-1872) is credited as the inventor of the game of Rugby Union Football.

This is supposed to have happened about 1823 while he was a student at Rugby School in Warwickshire, England. It is said that during a school football match, he picked up the ball and ran with it.

Although the story has become firmly entrenched in the sport's folklore, it is not supported by first hand evidence, and is discounted by most rugby historians as an origin myth.

In modern times, the Rugby Union World Cup is named in his honour.

https://en.wikipedia.org/wiki/William_Webb_Ellis