The other comment describes Sir Edward Carson as the prosecutor of Oscar Wilde. That's incorrect.
What happened was that, in a fit of madness, Oscar Wilde sued the Marquis of Queensbury (the father of his lover, Sir Alfred Douglas and the author of the rules of modern boxing) for slander, based on an accusation by Queensbury that Wilde was a 'somdomite' (sic). All of Wilde's friends tried to talk him out of it - Victorian England worked on a 'don't ask, don't tell' basis, and Wilde was quite safe had he done nothing. But his success as a playwright emboldened him, and he filed suit.
Carson was retained by the Marquis to defend him. The famous cross-examination occurred during the trial of Wilde's slander complaint. He was destroyed on cross examination, in such a way that the nature of his lifestyle became too public to be ignored. Carson, after he had won the slander case, actually tried to dissuade the Crown from prosecuting, but to no avail. A criminal prosecution did follow, in which Carson was not involved, ending in Wilde's conviction, and a 2 year prison sentence that effectively ended his career and life.
Carson, an Irish Protestant, earned my own condemnation for his role in opposing Irish independence. But in the Wilde case, he was responding for the defense, and he took active steps thereafter to prevent a prosecution. Wilde was the principal cause of his own legal destruction.
