By Dan Snierson
April 29, 2013 at 05:38 PM EDT
Fox; Jeffrey Mayer/WireImage

Every time that Peter Griffin has burped, farted, or otherwise acted boorishly on Family Guy is about to be evened out with one classy casting move: Downton Abbey star Michelle Dockery will lend her voice to the animated Fox comedy.

Known for playing droll aristocrat Lady Mary Crawley on the hit British period drama, Dockery will appear in a cutaway gag on the Griffins’ television playing… an aristocrat in a British period drama. Her brief cameo will air in an episode next season.

Recent guests on Family Guy include Jessica Biel, Drew Barrymore, Sofia Vergara, Ryan Reynolds, Johnny Depp, Elizabeth Banks, and Kellan Lutz.

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