Leopold I, the Holy Roman Emperor, was born June 9th, 1640. He became King of Hungary in 1655, and King of Bohemia in 1658, in which year he received the imperial crown. The Princes of the German Empire watched for some time the progress of his struggle with the Turks with indifference, but in 1663 they were induced to grant aid to Leopold after he had made a personal appeal to them in the diet at Ratisbon.
This text comes from a footnote on a diary entry in the 1893 edition edited by Henry B. Wheatley.
"Leopold I Habsburg (June 9, 1640 - May 5, 1705), Holy Roman emperor, was the second son of the emperor Ferdinand III and his first wife Maria Anna of Spain. His maternal grandparents were Philip III of Spain and Margaret of Austria....In 1655 he was chosen king of Hungary and in 1656 king of Bohemia,1657 king of Croatia and in July 1658, more than a year after his father's death, he was elected emperor at Frankfurt in spite of the intrigues of Jules Cardinal Mazarin, who wished to place on the imperial throne Ferdinand Maria, Elector of Bavaria or some other prince whose elevation would break the Habsburg succession....Leopold's long reign covers one of the most important periods of European history; for nearly the whole of its forty-seven years he was pitted against Louis XIV of France, whose dominant personality completely overshadowed Leopold. The emperor was not himself a man of war, and never led his troops in person; yet the greater part of his public life was spent in arranging and directing wars. The first was with Sweden, whose king Charles X found a useful ally in the prince of Transylvania, György II Rákóczi, a rebellious vassal of the Hungarian crown....The Ottoman Empire interfered in the affairs of Transylvania, always an unruly district, and this interference brought on a war with the Holy Roman Empire, which after some desultory operations really began in 1663. By a personal appeal to the diet at Regensburg Leopold induced the princes to send assistance for the campaign; troops were also sent by France, and in August 1664 the great imperialist general, Raimondo Montecuccoli, gained a notable victory at Saint Gotthard. By the Peace of Vasvár the emperor made a twenty years' truce with the sultan, granting more generous terms than his recent victory seemed to render necessary." http://en.wikipedia.org/wiki/Leopold_I,_Holy_Ro...
Chart showing the number of references in each month of the diary’s entries.