An Austrian criminal who's known for holding his daughter, Elisabeth, captive for over two decades and repeatedly raping her.
He was born in Austria to his single mother, Maria Fritzl.
He served eighteen months in jail for raping a woman in 1967.
He had seven children with his wife, Rosemarie Fritzl, and seven more children with his daughter, Elisabeth, whom he held hostage for twenty-four years.
He and rapist, Ariel Castro, both held women captive for years.
