At least 20 million people died during the Taiping Rebellion in China, led by a man who claimed to be the brother of Jesus, and who attempted to impose a theocracy based on his interpretation of Christianity.

Alfred Nobel, of the Nobel Prize, lost his brother to an accident at his lab. They were working with liquid nitrogen and attempting to create a more stable explosive. Nobel was able to complete his research after the accident and invented dynamite.

Kevin Costner refused to star in the movie Platoon (1986) because he believed it was insulting to American soldiers, since his own brother was a Vietnam veteran.

Alfred Nobel, inventor of the dynamite, was astonished to read his own obituary, titled “The merchant of death is dead,” in a French newspaper. It was Alfred’s brother who had died, but the episode made him reconsider his legacy. His last will specified that his fortune be used to create the Nobel Prize.

Louis Bonaparte, Napoleon’s brother, was known as and is still called the “King of Rabbits” because he mispronounced the Dutch phrase “I am your king” and instead said “I am your rabbit” when he took over the Netherlands in 1806.

The actors who played brother and sister on “Dexter” began dating, fell in love, got engaged, got married, and got divorced, all while continuing to play brother and sister on TV.