Cyrille Dion
... that Cyrille Dion won the first U.S. professional pool championship in 1878?
... that <b id="mwGCQ"><a href="./Cyrille_Dion" id="mwGCU" rel="mw:WikiLink" title="Cyrille Dion">Cyrille Dion</a></b> won the first U.S. professional <a href="./Pool_(cue_sports)" id="mwGCY" rel="mw:WikiLink" title="Pool (cue sports)">pool</a> championship in 1878?