Sydney Barnes, for my the greatest bowler of all time. Worth reading about in Amol Rajan's book "Twirlymen", every write-up from that period of time seems to wax lyrical about him! Tiger O'Reilly has to be up there as well, aaaand we'll go with Spofforth as well. Too many to pick from really, here's the list of them by wickets taken, there are some great names there!
http://stats.espncricinfo.com/ci/engine/stats/index.html?class=1;filter=advanced;orderby=wickets;qualmax1=30;qualmin1=0;qualval1=matches;template=results;type=bowling Peter Pollock, Colin Croft, John Gleeson, Saaed Ajmal (maybe not for long though!), Harold Larwood, Bert Ironmonger, and JJ Ferris just to name a few outstanding bowlers. What you'd expect to find is that those not playing more than 30 games are either back when Test matches were less frequent, really prone to injury, caught up in politics (Saffers for example) or just not good enough, but some of those bowlers are genuine test greats, O'Reilly for example was (according to the Don) the greatest bowler he ever faced!