Queen Catherine of Aragon is nearly always portrayed as a Spanish brunette in both fiction and documentaries. However, she was in fact, a strawberry blonde with blue eyes and a fair complexion. This was discovered when a painting of Catherine by Michael Sittow, c1502, was authenticated.
As revealed in a 2020 New York Times article, this series was one of the inspirations for the hit musical Six.
The 3-part seires was renamed Secrets of the Six Wives for its 2017 broadcast on PBS in the USA.