Elena Glinskaya ruled what would become Russia as regent for her son, wisely and ably in fact, until her life and reign were brought to brutal ends.
Elena Glinskaya: Powerful and Poisoned Regent
Marina Mniszech: The ‘Witch’ Who Met A Brutal End
Marina Mniszech, known as Marinka the Witch, was the wife of an impostor and ended up becoming the cause of his downfall and her own brutal end.
The Royal Women 