After getting the hang of Crusader Kings and gaining enough money and getting on the Pope's good side, I decided to depose a pretender who somehow got the crown to England. After decimating the King's troops and taking almost all of the English Kingdom, I won the war. This placed William II onto the throne, but I didn't want that to happen. I wanted my Duke to become the King, mainly due to the fact that I don't want my levies being raised every time there's a war with Scotland or France which would cause my Lord's to be disgruntled.
So, is there a way for my character to become the King or is it impossible at the moment?