Zeus Moiragetes, the god of fate, had three helpers,three goddesses:-
Clotho who spun the thread of life,
Lachesis, who pulled the thread out to it’s maximum length,
Aisa, who cut it short.
The were Known as the Moirai,
At the birth of a mortal, Moirai spun out the thread of his future life, followed his steps, and directed the consequences of his actions according to the counsel of the gods. It was not an inflexible fate; Zeus, if he chose, had the power of saving even those who were already on the point of being seized by their fate.
William de Windsor, because of his schooling, knew all about the goddesses and being confident in his ability to influence events was confident Zeus would look favourably on him.
Alyse Perez had similar knowledge and similar confidenc. She shared her knowledge of life forces with Ximene but initially Ximene had no idea how to use the knowledge.
John Stanley knew nothing of all this. He was motivated only by a desire to achieve the highest possible standards of chivalry.