View gallery Image Credit: Los Angeles Times via Getty Imag Lyle and Erik Menendez were sentenced to life in prison for the 1989 murder of their parents, José and Mary Louise "Kitty" Menendez, at their Beverly Hills home. However, this hasn't stopped them from building their own lives while behind bars. Now 57 and 54 years old, respectively, both brothers started families during their time in prison. Since the release of Ryan Murphy's Monsters: The Lyle and Erik Menendez Story, renewed attention has prompted many to wonder if the brothers have any children.