Stumped

Peter and I were having a discussion about where the word 'stumped' originated from. Peter was certain it was from cricket - ie. in cricket - the batsman gets stumped when he doesn't know how to attack the ball (and ends up missing it). I wasn't sure. So like all good children of the internet age, we 'googled' it to try and find out. Most information we could find doesn't link it back to cricket, but to tree stumps and various situations in which these used to stop/hinder peoples' activities, particularly in the American West. But that sounds like an American definition to us...