"Mrs Knep was the wife of a Smithfield horsedealer, and the mistress of Pepys"—or at least "she granted him a share of her favours". Scholars disagree on the full extent of the Pepys/Knep relationship, but much of later generations' knowledge of Knep comes from the diary. Pepys first met Knep on 6 December 1665. He described her as "pretty enough, but the most excellent, mad-humoured thing, and sings the noblest that I ever heard in my life." He called her husband "an ill, melancholy, jealous-looking fellow" and suspected him of abusing his wife. Knep provided Pepys with backstage access and was a conduit for theatrical and social gossip. When they wrote notes to each other, Pepys signed himself "Dapper Dickey", while Knep was "Barbry Allen" (that popular song was an item in her musical repertory).