I have been reading parts of the Book of Thoth and came across Crowley's explanation:
"The Qabalists, devising the Tarot, then proceeded to make pictures of these extremely abstract ideas of Father, Mother, Son, and Daughter, and they called them King, Queen, Prince and Princess. It is confusing, but they were also called Knight, Queen, King and Princess. Sometimes, too, the Prince and Princess are called 'Emperor' and 'Empress.'
The reason for this confusion is connected with the doctrine of the Fool of the Tarot, the legendary Wanderer, who wins the King's daughter, a legend which is connected with the old and exceedingly wise plan of choosing the successor to a king by his ability to win the princess from all competitors. (Frazer's Golden Bough is the authority on this subject.)
It has been thought better, for the present pack, to adopt the term "Knight," "Queen," "Prince" and "Princess," to represent the series Father, Mother, Son, Daughter, because the doctrine involved, which is extraordinarily complex and difficult, demands it. The Father is "Knight" because he is represented as riding on a horse."
I'm still reading...
Baby Owl