Welcome to RootsChat from me too.
My first thought was "Anton WALKER" nurseryman.
However, after Cas's post I found there is quite a few advertisments around 1902, selling bicycles "Auton Walker 4 New Station St, Leeds"
Saturday, Mar. 8, 1902
Publication: Yorkshire Evening Post
And earlier an Auton WALKER of Cundall Lodge, Boroughbridge, sounds like a farmer in an action against an employee absenting himself from work.
Saturday, Sept. 1, 1883
Publication: York Herald