John’s ascendancy to the throne was not without issues, and many of his barons harboured rebellious inclinations towards the newly crowned ruler. In fact, many of them had wished to crown John’s nephew instead, the sixteen year old Arthur of Brittany. When John caught wind of this and a rebellion was raised against him, he launched a surprise attack, capturing the rebel leaders and Arthur. He imprisoned Arthur, and it is said that one evening, he attacked his young nephew in a fit of drunken rage, murdering him.
He killed his own nephew in cold blood. (5/10)