Remember that word a while back on all manner of Game of Thronesiverse (hmm, we need to work on that one) things being in development? Well, we have some casting news for one of them.

Get your patriotic fervour happening (erm, even though she’s English-born) as we welcome Australia’s Naomi Watts to Westeros. It sure is a long way from kicking Tom Cruise to the kerb in favour of a lamb roast at home with the folks.

The as yet unnamed prequel has been created by writer Jane Goldman and Thrones overlord George RR Martin, and is set to take place thousands of years before the events of Game of Thrones, so no characters will appear from the established series (for obvious reasons). Also, the pair behind GoT, David Benioff and DB Weiss, aren’t involved in this one.

According to Deadline, Watts will play “a charismatic socialite hiding a dark secret”.

Now, it’s time to get some lamb with your fam!

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