It's supposedly derived from the Latin word for 'dragon,' but 'drac' also means 'devil' in Romanian. Dracoĭraco sounds a bit like Dracula, for good reason.
This name was also borne by several Christian martyrs. Damienĭamien comes from a Greek word meaning 'to tame.' It also has an irreparable association with the horror film The Omen, whose main character, a boy named Damien Thorn, is the son of Satan. Fun fact: The expression 'my brother's keeper' comes from the story of Cain and Abel. Subsequently, Cain was cursed to become a restless wanderer of the earth for eternity.
He is said to have killed his brother Abel in a twisted tale of sibling rivalry, thus becoming the first human to commit murder. Cain is a character from the Bible – the firstborn son of Adam.