We first hear of Walker's pugilistic career when he challenged Jack Hannan for the Lightweight Championship of England.
[1] This time Walker was defeated in 39 rounds and 3 hours and 48 minutes, after his shoulder was dislocated after a heavy throw.
Following his losses to Hannan, Walker defeated W. Jones on 2 June 1841, Fred Mason on 18 January 1842 and Ned Adams on 5 July 1842.
While owning the bar, "one of his favorite amusements was to stand against the wall and bet any one the drinks for the house that he could not strike him in the head with his fist.
[1] Although widely respected in his day, Johnny Walker died a poverty-stricken man in a London hospital on 18 January 1888.