Joseph II (German: Josef Benedikt Anton Michael Adam; English: Joseph Benedict Anthony Michael Adam; 13 March 1741 – 20 February 1790) was Holy Roman Emperor from 18 August 1765 and sole ruler of the Habsburg monarchy from 29 November 1780 until his death. He was the eldest son of Empress Maria Theresa and her husband, Emperor Francis I, and the brother of Marie Antoinette, Leopold II, Maria Carolina of Austria and Maria Amalia, Duchess of Parma. He was thus the first ruler in the Austrian dominions of the union of the Houses of Habsburg and Lorraine, styled Habsburg-Lorraine.
Joseph was a proponent of enlightened absolutism; however, his commitment to secularizing, liberalizing and modernizing reforms resulted in significant opposition, which resulted in failure to fully implement his programs. Meanwhile, despite making some territorial gains, his reckless foreign policy badly isolated Austria. He has been ranked with Catherine the Great of Russia and Frederick the Great of Prussia as one of the three great Enlightenment monarchs. False but influential letters depict him as a somewhat more radical philosophe than he probably was. His policies are now known as Josephinism.
He was a supporter of the arts, and most importantly of composers such as Wolfgang Amadeus Mozart and Antonio Salieri. He died with no surviving children and was succeeded by his younger brother Leopold II.
Joseph was born in the midst of the early upheavals of the War of the Austrian Succession. His formal education was provided through the writings of David Hume, Edward Gibbon, Voltaire, Jean-Jacques Rousseau, and the Encyclopédistes, and by the example of his contemporary (and sometimes rival) King Frederick II of Prussia. His practical training was conferred by government officials, who were directed to instruct him in the mechanical details of the administration of the numerous states composing the Austrian dominions and the Holy Roman Empire.
Joseph married Princess Isabella of Parma in October 1760, a union fashioned to bolster the 1756 defensive pact between France and Austria.