111 runs at cricket known as a 'Lord Nelson' or a 'Nelson'

I'm told this is because Nelson had one eye, one arm and one leg, but I'm not sure about the missing leg?

From the Channel 4 website
Nelson - the dreaded score of 111. When this total is reached, the superstitious custom is for the batting team off the pitch (and umpire David Shepherd) to take their feet off the ground. The name was coined in the mistaken belief that Nelson had one eye, one arm and one leg: in fact, he had two legs.