Downton Abbey: Paul Giamatti Joins Cast As Lady Cora's Brother

June 24, 2013
Paul Giamatti, Elizabeth McGovern -- Getty Images

"Downton Abbey's" Lady Cora has a new relative on the way in Season 4 - her playboy brother, Harold.

On Monday, British network ITV announced that Paul Giamatti ("Sideways," "John Adams") will play Cora's (Elizabeth McGovern) "maverick, playboy brother Harold."

He will appear in the show's Season 4 finale alongside Shirley MacLaine, who plays Martha Levinson

PHOTOS: Scenes & Stars Of 'Downton Abbey'

"We're excited that Paul Giamatti will be joining us on 'Downton' to play the rather free-spirited uncle to Mary and Edith," Carnival Films' Managing Director, Gareth Naeme, said in a statement.

"We can't wait to see him work alongside Shirley Maclaine, who are both sure to upset the Grantham's apple cart in this year's Christmas Day episode," he said.

WATCH IT NOW: Joanne Froggatt, Dan Stevens & Michelle Dockery Talk 'Downton Abbey'

The Christmas episode, which airs in the UK on December 25, is the show's Season 4 finale. It won't air in the U.S. on PBS' Masterpiece until 2014.

Season 4 premieres January 5, 2014 on Masterpiece.

-- Jolie Lash

Copyright 2013 by NBC Universal, Inc. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

What to Read Next