Marcus Beaton

Marcus Beaton (Lord Marcus Beaton) was a recurring guest character in season 2 of the television series Gossip Girl.

Marcus was Blair Waldorf's boyfriend in the beginning of season 2. Although Blair initially dated him only to make Chuck Bass jealous, she changed her mind once she finds out that he is a Lord. Marcus seems to genuinely care for Blair, and she in turn is ecstatic at the prospect of being with royalty. Unfortunately, while he was with Blair, he was simultaneously sleeping with his stepmother Catherine Beaton, who also happened to be having an affair with Nate Archibald, Blair's ex boyfriend.

Vanessa Abrams finds out about Marcus and Catherine's affair and shows pictures to Blair, who uses them to try and help Nate with his family's problems. Blair then breaks up with Marcus.