Did 'The Spanish Princess' Get Catherine of Aragon Right?

Oh dear, STARZ, what happened? I am talking, of course, about the first installment of The Spanish Princess and realizing that now a second season is in the works, this might be a good time to decipher the real-life mystery of Catherine of Aragon. If you watched the series, you may have noticed the disclaimer at the end of each episode noting that historical details may have been altered, presumably by both author Philippa Gregory - who wrote the novels upon which the show is based - and the series' scriptwriters. And that’s putting it mildly. Not to mention not counting the bizarre clothes, strange hairstyles, and surprise psychopathic behavior (yes, Margaret of Beaufort, we’re talking about you, and no, you did not murder the Princes in the Tower, who apparently weren't the sons of Edward IV anyway. I’m afraid that Henry VII was quite capable of arranging his own executions, thank you.)

In short: We're going to try to break down the real story behind this occasionally (often?) fictional re-imaginging.

Let's start with this family tree of both the Spanish and English royal families in 1501.