Oops. Somehow I erased the link before posting, or forgot to ctrl-v. Good catch on that. Versions of The Bragging Song:
http://lyricsplayground.com/alpha/so...gingsong.shtml
And here's a link to one of the variants of Tom O' Bedlam, while I'm at it:
http://home.blarg.net/~efreeman/Basement/TOB.html
SF writers seem drawn to this song. Bob Silverberg wrote a novel titled 'Tom O' Bedlam'; one of Poul Anderson's Flandry novels was titled 'A knight of Ghosts and Shadows'; and Alfred Bester used it to good effect in 'The Stars My Destination'.