Never the preferred heir, Tiberius (42 BC – 37 AD / reigned 14 – 37 AD) soon showed why Augustus had wanted someone else. His political inability, poor judgment and jealousy led Rome into a ...
Augustus had outlived his preferred heirs - his two grandsons. So when he died, it was his son-in-law, Tiberius, who became emperor. Tiberius knew he was not first choice. So did everybody else.