Game Of Thrones: Michelle Fairley On Season 3's New Tully Cast Members

Michelle Fairley at San Diego Comic-Con 2012 (left) and Tobias Menzies in London (right) -- Getty Images

Robb and Catelyn Stark's family is set to grow in Season 3 of "Game of Thrones," and Michelle Fairley told she already has a connection to her two new Tully relatives.

"I've worked with Tobias [Menzies] before," she told Access at Comic-Con of the former HBO "Rome" star (he played a young Brutus), who joins "GOT" as Cat's brother, Edmure Tully, in Season 3. "We did a film together in Croatia a couple of years ago."

PLAY IT NOW: Comic-Con 2012: Michelle Fairley Talks New Game Of Thrones Season 3 Tully Characters

(Michelle also pronounced her new "GOT" brother's name - with the "mure" ending sounding just like "sure" is pronounced if it had an "m.")

PHOTOS: Game Of Thrones Stars At Comic-Con 2012

VIEW THE PHOTOS: Game Of Thrones Stars At Comic-Con 2012

Cat will also be getting an uncle - Brynden Tully (Robb's great uncle) -- played by Clive Russell (a veteran of "Sherlock Holmes: A Game of Shadows").

"I've worked with Clive as well and he's a wonderful guy. We did a film together in Ireland a couple of years ago and he's fantastic, and I love that character," Michelle told Access . "He makes Catelyn feel very safe and secure and Clive is just a lovely, gentle man and a wonderful actor, so I feel very safe with him."

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Asked how the new Tullys will fit into the drama, Michelle actually hinted at what might not make it in Season 3 (which premieres March 31, 2013) from the George R.R. Martin books.

"My family, the Tully family, they live in Riverrun and in the books they're quite different because, there's a whole sequence -- my sister's up in the Eyrie now -- and in the books, my father is dying and I actually go and visit him and, of course, because it's a television series and you need to keep the energy up, and the audience's interest, as well, certain little shortcuts are taken," she told Access . "So, I can't give anything away, but... the scripts are amazing. They really are, they're fantastic."

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Catelyn was in a fair bit of trouble at the end of Season 2, under guard after - without her son Robb's knowledge or approval - she sent Brienne to take Jaime "The Kingslayer" Lannister to King's Landing, in the hopes of striking a bargain for daughters Sansa and Arya.

And as Season 3 begins, Catelyn will again be in a tough spot, Michelle told Access .

"[She's] in the same place, really, in the same place with Robb and the camp and as the season progresses, you know, she's still carrying, whatever she's carrying inside of her, " Michelle said. "She knows what she wants and certain events happen that sidetrack her, so she goes on yet more journeys."

-- Jolie Lash

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