Lady Jane Grey, Queen of England (disputed) - Queen for 9 days.Lady Jane Grey,Not Disputed.

True, but it's all a question of who has the most backing. Matilda had the better claim to the throne of England, but 1) Stephen moved faster and 2) she alienated too many supporters.

In the case of Jane vs. Mary, Mary moved faster and got there first with the strongest backing.

What i am saying, is She WAS Queen for 9 days, it can not be disputed. thats all, :)

Legally she was not queen. Though Edward had named her his successor (she was fifth in line for the throne), the law of succession, as ratified by Parliament, gave the throne to Mary and then Elizabeth, Henry VIII’s other children. The king had no legal right to change the succession, without the consent of Parliament.

And since the Treason Act of 1547 had made it high treason to interrupt the line of succession, Lady Jane’s execution was, alas, quite legal, and in this case not trumped up.

Parliament had had some say in the succession since at least Richard III (Titulus Regius, which Henry VII went out of his way to hush up and destroy all copies of, because it made HIM a traitor). Possibly longer.

"Treason doth never prosper; what's the reason?
That if it prosper, none dare call it treason".

Source: Wikipedia.org
"Parliament Privy Council overrides the Kings Decision"???
King Edward VI had named Lady Jane as his successor, the laws of succession, as ratified by Parliament in 1543,had established the line as going to Mary and then Elizabeth, and the king had no right to change the succession without the consent of Parliament.