Princess Rhaenyra Targaryen was destined to become the first queen of Westeros before Daenerys Targaryen became the well-known "mother of dragons" in "Game of Thrones."

The Post quoted Milly Alcock, 22, as saying that she hadn't watched "Game of Thrones" before getting the role of Rhaenyra in the first five episodes of the "House of the Dragon" spinoff series.

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“But of course, I knew about it,” she said.

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“I understood that it was very big and very popular.

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[After getting cast], I watched it to prepare. I binged the whole 8 seasons in 2 weeks.

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It was intense, and I quickly became a fan and understood why everyone loved it.”

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The HBO series "House of the Dragon" (Sundays at 9 p.m.) follows the ancestors of Daenerys and Jon Snow, the silver-haired Targaryen line, and is set roughly 200 years before the events of "Game of Thrones."

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King Viserys I (Paddy Considine), who sits on the Iron Throne, just named Princess Rhaenyra as his heir.

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He did this despite the fact that it's not customary for women to reign and his counselors worry that this will cause in the kingdom.

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