Analysis of information sources in references of the Wikipedia article "William Webb Ellis" in English language version.
Consequently Ellis's actions (if they happened) were not responsible for changing the rules, and at best can only be seen as inspiration for subsequent 'runners'. ... Mackie popularised the action in 1838/9 and the custom was officially legalised at Rugby School in 1842. Hughes also states "the Webb Ellis tradition had not survived" to his day (i.e. 1834, 12 years after the alleged Ellis incident) so it was obviously no influence on Mackie.