In 1679 came out an Essay on Satire, said to be written jointly by Mr. Dryden and the earl of Mulgrave; this piece, which was handed about in manuscript, containing Reflexions on the Duchess of Portsmouth, and the Earl of Rochester; who suspecting, as Wood says, Mr. Dryden to be the author, hired three ruffians to cudgel him in Wills's coffee-house at eight o'clock at night. This short anecdote, I think, cannot be told without indignation. It proved Rochester was a malicious coward, and, like other cowards, cruel and insolent; his foul was incapable of any thing that approached towards generosity, and when his resentment was heated, he pursued revenge, and retained the most lasting hatred; he had always entertained a prejudice against Dryden, from no other motive than envy, Dryden's plays met with success, and this was enough to fire the resentment of Rochester, who was naturally envious. In order to hurt the character, and shake the interest of this noble poet, he recommended Crown, an obscure man, to write a Masque for the court, which was Dryden's province, as poet-laureat, to perform. Crown in this succeeded, but soon after, when his play called the Conquest of Jerusalem met with such extravagant applause, Rochester, jealous of his new favourite, not only abandoned him, but commenced from that moment his enemy. The other person against whom this satire was levelled, was not superior in virtue to the former, and all the nation over, two better subjects for satire could not have been found, than lord Rochester, and the duchess of Portsmouth. As for Rochester, he had not genius enough to enter the lists with Dryden, so he fell upon another method of revenge; and meanly hired bravoes to assault him.