You've got big shoes to fill when your dad's William the Conqueror, but William II of England AKA Rufus didn't waste time in making his own mark. While Dad built castles, Rufus built a reputation for treating England's treasury like an unlimited gift card and turning tax collection into an extreme sport.  

He never married, treated the Church like his personal nemesis and somehow managed to be even less popular than his conquest-happy father. At least he built Westminster Hall - one architectural flex for the history books.

His reign ended with a suspiciously well-aimed arrow during a hunting trip in 1100, conveniently making way for his brother Henry. When Winchester Cathedral's tower later collapsed on his grave, medieval chroniclers couldn't help but note the poetic justice.