Which monarch, beat his pregnant daughter-in-law, causing a miscarriage, and subsequently killed his son in fit of rage?

The grandson of Ivan the Great, Ivan the Terrible was born Ivan Chetvyorty Vasilyevich on August 25, 1530, in the Grand Duchy of Muscovy, Russia, to members of the Rurik dynasty.Upon the death of his first wife in 1560, Ivan IV went into a deep depression and his behavior became more erratic. Over the next 24 years, Ivan IV conducted a reign of terror, displacing and destroying the major boyar families in the region, and earning the moniker by which he's now best known. It was during this period that Ivan beat his pregnant daughter-in-law, causing a miscarriage, killed his son in a subsequent fit of rage, and blinded the architect of St. Basil's Cathedral. It was also during this time that he created the Oprichniki, the first official secret Russian police force.In 1584, with his health failing, Ivan the Terrible became obsessed with death, calling upon witches and soothsayers to sustain him, but to no avail. The end came on March 18, 1584, when Ivan died of an apparent stroke. He had willed the kingdom to his unfit son, Feodor, whose rule spiraled Russia into the catastrophic Time of Troubles, leading to the establishment of the Romanov Dynasty.