Have you been engrossed in "The White Princess?" The mini-series on Starz has told the story of Lizzie, more formally known as Elizabeth Of York, and Henry Tudor. Based on the adaptation of Philippa Gregory's novel of the same name, the show tells Gregory's views that Lizzie's brother Richard escaped death and returned to England as who would later be known as Perkin Warbeck.

While the history is compelling and there are certainly possibilities that Richard was Perkin Warbeck, it's worth knowing your history. Here are four facts that you need to know about the real Perkin Warbeck from history.

Lizzie never showed signs of believing Perkin's tale

Last week, Lizzie gave Maggie the key to her husband's closet to free Richard.

Believing that this was her brother, she wanted to make sure that he and his family were free from court. However, real history doesn't point to any of this happening. While it is possible that someone else took the fall for her, there are no signs that Lizzie believed the man to be her brother. In fact, most historians state that Lizzie categorically denied the possibility of this man being her brother.

The Holy Roman Emperor and James IV of Scotland believed his claim

While Lizzie may not have believed Perkin's claim, royalty around the world did. Most notably, Maximilian I, the Holy Roman Emperor, and James IV of Scotland both believed Perkin to be the real Richard, Duke of York. This was despite James IV of Scotland later marrying Henry Tudor's elder daughter Margaret. The support from foreign officials made it difficult for the English people to know which side to be on.

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Spain wavered in support for Henry and Lizzie

Because of the support from the Holy Roman Emperor and Scotland for Perkin, Spain waivered in their support for Henry and Lizzie. As "The White Princess" fans have seen, Henry turned to Spain when he realized he needed foreign support. Ferdinard and Isabella did agree to a marriage between Arthur Tudor and Catherine of Aragon, but it would take years for that marriage to actually take place.

Perkin admitted his story through torture

After being captured, Perkin Warbeck finally admitted his story. He made it clear that he was originally from Flanders and had gained support for the fake claim to the throne. However, some historians like Gregory point out that this confession may have been coerced through the torture. A person can only take so much, and Richard may have decided to give his torturers the information they wanted to make the torture stop.

"The White Princess" continues on Sunday with the season finale. Catch it at 8 p.m. on Starz to see how Richard/Perkin Warbeck's life will end.