I have just been reading about Mary Queen of Scots and her second husband, Lord Darnley...now that was a man who defined entitled, SS behaviour!
Darnley had such a strong claim to the English throne that he was a serious contender to be named Queen Elizabeth I's heir. His parents spoiled him rotten and constantly told him how important he was and how one day he'd be king. The results were predictable. He ended up a whiny, bullying snowflake with a level of entitlement which is just...well, read what happened.
When he was 18 he managed to make Mary Queen of Scots fall in love with him so hard she married him against the advice of her Council, and immediately invested him as King of Scotland. Dynastically it was a good match (Mary also had a good claim to the English throne, and their son ended up succeeding Elizabeth) but personally it was a disaster; Mary's infatuation wore off within 3 months.
Darnley was insulting and insolent to anyone he saw as his inferior (everyone, including his Queen Regnant wife!!!!) and had alienated most of the important Scottish Lords even before the marriage. After it, he demanded all the priviledges of kingship but did none of the work, blowing off Council meetings to go hunting and get drunk with his buddies. He even refused to sign papers that had been prepared for him - Mary had to get a stamp made of his signature to enable the government to function effectively.
Darnley wanted to be invested with the Crown Matrimonial, which would have made him King in his own right if Mary died childless. Wisely, she refused. He took offense, sulked and raged about it; he would spend the rest of his life plotting to get what he saw as his "right" to unfettered power, while doing everything he could to prove he was unfit to hold it.
A group of noblemen got up a plot to force Mary to give them more power. They talked Darnley into supporting them by promising him the Crown Matrimonial. The plot was put down and the lords outlawed. Strike one case of treason against Darnley. Mary persuaded herself that her 18-year old husband had been "led astray by evil counsellors", but he had lost everyone's trust and was excluded from all government affairs. Mary also began turning to other men for political advice. Predictably, he took offence.
By now Mary was pregnant. She was heavily reliant on the advice of her secretary, David Rizzio, which offended some other lords. They decided to stage a coup, murder Rizzio, imprison Mary and set Darnley up as a puppet king. To grease the path they spread a rumor that Rizzio was Mary's lover and the father of her child. Darnley did not originate the plot but joined it enthusiastically, adding the refinement that Rizzio be murdered in Mary's presence. This was done. Darnley did not strike any of the fatal blows himself but restrained Mary from helping Rizzio as he clung screaming to her skirts. Mary came to believe that Darnley had intended the shock to cause her to miscarry, even kill her. She was treated with extreme disrespect and violence by the conspirators. One flourished a dagger so close to her she felt the coldness of it: one threatened to "cut her into collops and throw her over the (castle) wall" if she called for help: another put a pistol against her belly and pulled the trigger, but the weapon misfired.
Strike two case of treason against Darnley.
Immediately after the murder Darnley realised the conspirators had no intention of letting him have any real power. So he went crawling back to Mary, insisting he had only acted out of jealousy of Rizzio and had no idea the plotters meant to stage a coup. Mary was unimpressed but needed him to acknowledge the baby's paternity when it was born. With the help of loyal lords Mary and Darnley escaped, and the coup was put down.
Unfortunately for Darnley, the conspirators had taken out insurance against him abandoning them. They had insisted he sign a document stating he was aware of the intention to depose Mary, and taking full responsibility for Rizzio's murder. He had cheerfully done so. They sent it to Mary. Darnley now stood exposed as the man who had betrayed his wife, his Queen and his fellow-conspirators. He was effectively Sent To Coventry. Mary had no choice but to keep him around for political reasons, but no-one else would even be seen in his company.
He took offence.
As no-one in Scotland would have anything to do with him, he began trying to plot with the Spanish King to depose, not only Mary, but Elizabeth and set himself up as joint king of Scotland and England. By now he was widely recognised as an idiot who could be used by anyone who wanted to cause trouble.
It is really no surprise he got himself murdered. His death remains a hotly contested mystery to this day, mostly because there was hardly an important person in Scotland or England who didn't want him dead.
His father spent the rest of his life insisting his son was a good and virtuous boy who was maybe a little gullible, but had done nothing - nothing! - to deserve anyone's bad opinion.