There are several reasons why James 1 clashed with his parliament are several but trying to marry his son off to a catholic was not one of them. James clashed with the parliament due to his ways of raising money without parliamentary consents, such as selling the seats of nobility, his high-handedness that included his believe that his seat was ordained by God,and failure to speak with the parliament.
Ivan the terrible, or Ivan IV, was the first tsar of Russia. During his reign he gained lots of land through creating a centrally controlled government